Form elements not saved by version 7.2.2.0

Today I spent quite a lot of time cutting and pasting certain elements of form1 in project explorer in order to get the divs into the right place one inside another as well as adjusting classes, attributes, id etc. Additionally I had the pain that pasting the cut out elements caused renaming the pasted elements to xyCopy. So I repeatedly had to rename these form elements to their former names, without “Copy”. When everything seemed to be in place and ready I noticed that there was a new version 7.2.2.1. I had saved the project. When I tried to close AppStudio I repeatedly was asked if I would save the project. Hitting the save button did not close and I was asked again and again. So I hit the cancel button. I do not remember how I finally could close AppStudio. I uninstalled it and installed the latest version. When I opened AppStudio again there was a message that a file like ,Copy.json had not been found. Indeed neither in project explorer nor in the forms/elements folder and files I could find the elements which had been working and been saved a day before and had been visible before and after cutting (like ctrl x) and pasting them into the new divs I had inserted today. The new divs are still shown, the pasted elements have disappeared.
I wonder if it makes sense to spend hours again with renewing the disappeared form elements or if something else could be fixed before. Bernd

Part of today’s log:
WindowsError: [Error 2] Das System kann die angegebene Datei nicht finden: u’D:\NSBasic Samples\AppStudio7Projekte\FristenExperimente.appstudio\cache\ContainerIconCopy.pmp’
2019-02-14 19:22:54,599 - root - ERROR - An exception has occurred!
Traceback (most recent call last):
File “MainFrame.py”, line 1527, in OnMenuRunStartInDesktopBrowserMenu
File “MainFrame.py”, line 1699, in SaveProject
File “IDEController.py”, line 65, in wrapper
File “IDEController.py”, line 2309, in SaveCurrent
WindowsError: [Error 2] Das System kann die angegebene Datei nicht finden: u’D:\NSBasic Samples\AppStudio7Projekte\FristenExperimente.appstudio\forms\Form1\Elements\ContainerIconCopy.json’
2019-02-14 19:23:05,509 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:23:05,509 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:23:05,509 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:23:07,844 - root - ERROR - An exception has occurred!
Traceback (most recent call last):
File “MainFrame.py”, line 1527, in OnMenuRunStartInDesktopBrowserMenu
File “MainFrame.py”, line 1699, in SaveProject
File “IDEController.py”, line 65, in wrapper
File “IDEController.py”, line 2309, in SaveCurrent
WindowsError: [Error 2] Das System kann die angegebene Datei nicht finden: u’D:\NSBasic Samples\AppStudio7Projekte\FristenExperimente.appstudio\cache\ContainerTextCopy.pmp’
2019-02-14 19:23:22,747 - IDEController - WARNING - Ignoring duplicate selection request.
2019-02-14 19:23:25,627 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:23:25,628 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:23:25,628 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:23:58,397 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:23:58,398 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:23:58,398 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:23:59,960 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:23:59,960 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:23:59,961 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:23:59,961 - PropertiesPanel - WARNING - Property does not exist: _functions
2019-02-14 19:24:13,604 - IDEController - WARNING - Ignoring duplicate selection request.
2019-02-14 19:24:21,244 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:24:21,246 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:24:21,246 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:01,443 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:01,444 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:01,444 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:02,927 - IDEController - WARNING - Ignoring duplicate selection request.
2019-02-14 19:25:05,484 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:05,486 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:05,486 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:05,486 - PropertiesPanel - WARNING - Property does not exist: _functions
2019-02-14 19:25:07,075 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:07,076 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:07,076 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:09,558 - IDEController - WARNING - Ignoring duplicate selection request.
2019-02-14 19:25:11,904 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:11,905 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:11,907 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:13,224 - IDEController - WARNING - Ignoring duplicate selection request.
2019-02-14 19:25:22,348 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:22,349 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:22,351 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:30,313 - PropertiesPanel - WARNING - Property does not exist: cached_js_script_hash
2019-02-14 19:25:30,313 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:30,313 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:30,313 - PropertiesPanel - WARNING - Property does not exist: _controller
2019-02-14 19:25:30,315 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:33,210 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:33,211 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:33,213 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:39,858 - PropertiesPanel - WARNING - Property does not exist: cached_js_script_hash
2019-02-14 19:25:39,858 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:39,858 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:39,858 - PropertiesPanel - WARNING - Property does not exist: _controller
2019-02-14 19:25:39,858 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:42,474 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:42,476 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:42,476 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:47,608 - PropertiesPanel - WARNING - Property does not exist: cached_js_script_hash
2019-02-14 19:25:47,608 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:47,609 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:47,609 - PropertiesPanel - WARNING - Property does not exist: _controller
2019-02-14 19:25:47,609 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:49,581 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:49,582 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:49,584 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:56,193 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:56,194 - PropertiesPanel - WARNING - Property does not exist: _controller
2019-02-14 19:25:56,194 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:25:56,194 - PropertiesPanel - WARNING - Property does not exist: cached_js_script_hash
2019-02-14 19:25:56,194 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:58,724 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:25:58,726 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:25:58,726 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:26:04,953 - PropertiesPanel - WARNING - Property does not exist: cached_js_script_hash
2019-02-14 19:26:04,954 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:26:04,954 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:26:04,954 - PropertiesPanel - WARNING - Property does not exist: _controller
2019-02-14 19:26:04,954 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:26:07,747 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:26:07,749 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:26:07,750 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:26:14,480 - PropertiesPanel - WARNING - Property does not exist: cached_js_script_hash
2019-02-14 19:26:14,482 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:26:14,482 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:26:14,482 - PropertiesPanel - WARNING - Property does not exist: _controller
2019-02-14 19:26:14,482 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:26:18,684 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:26:18,684 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:26:18,686 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:26:25,265 - PropertiesPanel - WARNING - Property does not exist: cached_js_script_hash
2019-02-14 19:26:25,265 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:26:25,266 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:26:25,266 - PropertiesPanel - WARNING - Property does not exist: _controller
2019-02-14 19:26:25,266 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:26:32,283 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:26:32,285 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:26:32,286 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:26:38,026 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:26:38,026 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:26:38,026 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:26:42,832 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:26:42,835 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:26:42,835 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:26:47,002 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:26:47,003 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:26:47,003 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:27:09,355 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:27:09,357 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:27:09,358 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:27:19,265 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:27:19,266 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:27:19,266 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:27:27,305 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:27:27,306 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:27:27,308 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:27:35,371 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:27:35,372 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:27:35,374 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:27:42,066 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:27:42,068 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:27:42,069 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:27:44,562 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:27:44,563 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:27:44,565 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:28:12,816 - root - ERROR - An exception has occurred!
Traceback (most recent call last):
File “MainFrame.py”, line 1190, in OnMenuFileSaveprojectMenu
File “MainFrame.py”, line 1699, in SaveProject
File “IDEController.py”, line 65, in wrapper
File “IDEController.py”, line 2309, in SaveCurrent
WindowsError: [Error 2] Das System kann die angegebene Datei nicht finden: u’D:\NSBasic Samples\AppStudio7Projekte\FristenExperimente.appstudio\forms\Form1\Elements\ContainerAppendCopy.json’
2019-02-14 19:28:15,003 - root - ERROR - An exception has occurred!
Traceback (most recent call last):
File “MainFrame.py”, line 1527, in OnMenuRunStartInDesktopBrowserMenu
File “MainFrame.py”, line 1699, in SaveProject
File “IDEController.py”, line 65, in wrapper
File “IDEController.py”, line 2309, in SaveCurrent
WindowsError: [Error 2] Das System kann die angegebene Datei nicht finden: u’D:\NSBasic Samples\AppStudio7Projekte\FristenExperimente.appstudio\cache\datetimepicker1InputCopy.pmp’
2019-02-14 19:28:28,049 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 19:28:28,051 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 19:28:28,052 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 19:28:52,569 - requests.packages.urllib3.connectionpool - INFO - Starting new HTTPS connection (1): www.nsbasic.com
2019-02-14 19:29:52,108 - root - ERROR - An exception has occurred!
Traceback (most recent call last):
File “MainFrame.py”, line 1190, in OnMenuFileSaveprojectMenu
File “MainFrame.py”, line 1699, in SaveProject
File “IDEController.py”, line 65, in wrapper
File “IDEController.py”, line 2309, in SaveCurrent
WindowsError: [Error 2] Das System kann die angegebene Datei nicht finden: u’D:\NSBasic Samples\AppStudio7Projekte\FristenExperimente.appstudio\forms\Form1\Elements\datetimepicker1InputCopy.json’
2019-02-14 19:29:58,766 - root - ERROR - An exception has occurred!
Traceback (most recent call last):
File “MainFrame.py”, line 1030, in OnClose
File “MainFrame.py”, line 1690, in QuerySave
File “MainFrame.py”, line 1699, in SaveProject
File “IDEController.py”, line 65, in wrapper
File “IDEController.py”, line 2309, in SaveCurrent
WindowsError: [Error 2] Das System kann die angegebene Datei nicht finden: u’D:\NSBasic Samples\AppStudio7Projekte\FristenExperimente.appstudio\cache\datetimepicker1Copy.pmp’
2019-02-14 19:30:12,520 - root - ERROR - An exception has occurred!
Traceback (most recent call last):
File “MainFrame.py”, line 1030, in OnClose
File “MainFrame.py”, line 1690, in QuerySave
File “MainFrame.py”, line 1699, in SaveProject
File “IDEController.py”, line 65, in wrapper
File “IDEController.py”, line 2309, in SaveCurrent
WindowsError: [Error 2] Das System kann die angegebene Datei nicht finden: u’D:\NSBasic Samples\AppStudio7Projekte\FristenExperimente.appstudio\forms\Form1\Elements\ContainerAppendCopy.json’
2019-02-14 19:30:24,711 - root - ERROR - An exception has occurred!
Traceback (most recent call last):
File “MainFrame.py”, line 1030, in OnClose
File “MainFrame.py”, line 1690, in QuerySave
File “MainFrame.py”, line 1699, in SaveProject
File “IDEController.py”, line 65, in wrapper
File “IDEController.py”, line 2309, in SaveCurrent
WindowsError: [Error 2] Das System kann die angegebene Datei nicht finden: u’D:\NSBasic Samples\AppStudio7Projekte\FristenExperimente.appstudio\cache\datetimepicker1InputCopy.pmp’
2019-02-14 22:30:31,066 - main - INFO - ****************************************
2019-02-14 22:30:31,069 - main - INFO - * Welcome to NSB/AppStudio 7.2.2.1
2019-02-14 22:30:31,069 - main - INFO - * Starting at level: 10
2019-02-14 22:30:31,069 - main - INFO - * Install Dir: C:\Program Files (x86)\NSB AppStudio
2019-02-14 22:30:31,069 - main - INFO - * Frozen: True
2019-02-14 22:30:31,069 - main - INFO - ****************************************
2019-02-14 22:30:31,069 - main - INFO - * Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:42:59) [MSC v.1500 32 bit (Intel)]
2019-02-14 22:30:31,071 - main - INFO - * wxPython 3.0.2.0 msw (classic)
2019-02-14 22:30:31,071 - main - INFO - * ecdsa 0.13
2019-02-14 22:30:31,071 - main - INFO - * jsbeautifier 1.5.4
2019-02-14 22:30:31,071 - main - INFO - * paramiko 1.15.2
2019-02-14 22:30:31,071 - main - INFO - * pycrypto 2.6.1
2019-02-14 22:30:31,071 - main - INFO - * pysftp 0.2.8
2019-02-14 22:30:31,071 - main - INFO - * PyYAML 3.11
2019-02-14 22:30:31,071 - main - INFO - * requests 2.10.0
2019-02-14 22:30:31,071 - main - INFO - * six 1.10.0
2019-02-14 22:30:31,072 - main - INFO - * verlib (no version in module)
2019-02-14 22:30:31,072 - main - INFO - * Native OpenSSL 1.0.2j 26 Sep 2016
2019-02-14 22:30:31,072 - main - INFO - * Python OpenSSL 1.0.2h 3 May 2016
2019-02-14 22:30:31,072 - main - INFO - * ndg.httpsclient (no version in module)
2019-02-14 22:30:31,072 - main - INFO - ****************************************
2019-02-14 22:30:31,390 - main - INFO - Registration: eJxNUEFuhDAM/MrK1wJyKOxCjlV/0O0ZBWKqSCGwNqxaVf17E+hKtXywxqOZsb/hTixuDqDhUmCBkIF3AwWhiLzSnfy8EEfUOjG9Jwt6NF4og2CmxHkhDvb0Nk/TThNiZ3zE38s2P2ObK3WN8MI0ElMYSECHzfsMmG4bydpZsyadElWTY5M/47VEXde6bp8QNaZED6qxlkmiAjRVoepLoc5VUbX/0nVMRtI1h0fvvHfhoxt3hTB8PRZ/N3b0uTg26/EAjJXvfdqdD3PZehnYLYnUyWrWLQWIQ7DGz4Hg5xeb0mcW
2019-02-14 22:30:31,782 - requests.packages.urllib3.connectionpool - INFO - Starting new HTTPS connection (1): www.nsbasic.com
2019-02-14 22:31:05,351 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 22:31:05,351 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 22:31:05,352 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 22:31:06,270 - PropertiesPanel - WARNING - Dashboard Access has a bad enum value: False
2019-02-14 22:31:06,273 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 22:31:06,276 - PropertiesPanel - WARNING - Property does not exist: _dbfiles
2019-02-14 22:31:06,286 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 22:31:06,290 - PropertiesPanel - WARNING - Property does not exist: id
2019-02-14 22:31:06,290 - PropertiesPanel - WARNING - BabelOnDeploy has a bad enum value:
2019-02-14 22:31:06,621 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 22:31:06,625 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 22:31:06,628 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 22:31:07,138 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 22:31:07,138 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 22:31:07,138 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 22:31:07,359 - appstudio.editor.design - WARNING - Exception while converting result to json.
Traceback (most recent call last):
File “appstudio\editor\design.py”, line 835, in run_script
File "json_init
.py", line 339, in loads
File “json\decoder.py”, line 364, in decode
File “json\decoder.py”, line 382, in raw_decode
ValueError: No JSON object could be decoded
2019-02-14 22:31:07,361 - appstudio.editor.design - WARNING - Document UUID () did not match stored UUID (8dc87375b067415a9b88f6bb4cfbca95)!
2019-02-14 22:31:47,102 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 22:31:47,104 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 22:31:47,105 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 22:42:53,591 - main - INFO - ****************************************
2019-02-14 22:42:53,591 - main - INFO - * Welcome to NSB/AppStudio 7.2.2.1
2019-02-14 22:42:53,591 - main - INFO - * Starting at level: 10
2019-02-14 22:42:53,591 - main - INFO - * Install Dir: C:\Program Files (x86)\NSB AppStudio
2019-02-14 22:42:53,591 - main - INFO - * Frozen: True
2019-02-14 22:42:53,591 - main - INFO - ****************************************
2019-02-14 22:42:53,591 - main - INFO - * Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:42:59) [MSC v.1500 32 bit (Intel)]
2019-02-14 22:42:53,592 - main - INFO - * wxPython 3.0.2.0 msw (classic)
2019-02-14 22:42:53,592 - main - INFO - * ecdsa 0.13
2019-02-14 22:42:53,592 - main - INFO - * jsbeautifier 1.5.4
2019-02-14 22:42:53,592 - main - INFO - * paramiko 1.15.2
2019-02-14 22:42:53,592 - main - INFO - * pycrypto 2.6.1
2019-02-14 22:42:53,592 - main - INFO - * pysftp 0.2.8
2019-02-14 22:42:53,592 - main - INFO - * PyYAML 3.11
2019-02-14 22:42:53,592 - main - INFO - * requests 2.10.0
2019-02-14 22:42:53,592 - main - INFO - * six 1.10.0
2019-02-14 22:42:53,592 - main - INFO - * verlib (no version in module)
2019-02-14 22:42:53,592 - main - INFO - * Native OpenSSL 1.0.2j 26 Sep 2016
2019-02-14 22:42:53,592 - main - INFO - * Python OpenSSL 1.0.2h 3 May 2016
2019-02-14 22:42:53,592 - main - INFO - * ndg.httpsclient (no version in module)
2019-02-14 22:42:53,592 - main - INFO - ****************************************
2019-02-14 22:42:53,898 - main - INFO - Registration: eJxNUEFuhDAM/MrK1wJyKOxCjlV/0O0ZBWKqSCGwNqxaVf17E+hKtXywxqOZsb/hTixuDqDhUmCBkIF3AwWhiLzSnfy8EEfUOjG9Jwt6NF4og2CmxHkhDvb0Nk/TThNiZ3zE38s2P2ObK3WN8MI0ElMYSECHzfsMmG4bydpZsyadElWTY5M/47VEXde6bp8QNaZED6qxlkmiAjRVoepLoc5VUbX/0nVMRtI1h0fvvHfhoxt3hTB8PRZ/N3b0uTg26/EAjJXvfdqdD3PZehnYLYnUyWrWLQWIQ7DGz4Hg5xeb0mcW
2019-02-14 22:42:54,349 - requests.packages.urllib3.connectionpool - INFO - Starting new HTTPS connection (1): www.nsbasic.com
2019-02-14 22:43:28,312 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 22:43:28,312 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 22:43:28,312 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 22:43:29,079 - PropertiesPanel - WARNING - Dashboard Access has a bad enum value: False
2019-02-14 22:43:29,082 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 22:43:29,085 - PropertiesPanel - WARNING - Property does not exist: _dbfiles
2019-02-14 22:43:29,094 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 22:43:29,098 - PropertiesPanel - WARNING - Property does not exist: id
2019-02-14 22:43:29,099 - PropertiesPanel - WARNING - BabelOnDeploy has a bad enum value:
2019-02-14 22:43:29,444 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 22:43:29,448 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 22:43:29,451 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 22:43:29,963 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 22:43:29,963 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 22:43:29,963 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 22:43:30,164 - appstudio.editor.design - WARNING - Exception while converting result to json.
Traceback (most recent call last):
File “appstudio\editor\design.py”, line 835, in run_script
File "json_init
.py", line 339, in loads
File “json\decoder.py”, line 364, in decode
File “json\decoder.py”, line 382, in raw_decode
ValueError: No JSON object could be decoded
2019-02-14 22:43:30,164 - appstudio.editor.design - WARNING - Document UUID () did not match stored UUID (b8482b8f88db494d8ae2e5afecbe0f9c)!

I put in again all these disappeared controls and properties. The app does run again as before the issue.
Now I still see this in the log:
2019-02-14 23:49:58,223 - MainFrame - INFO - Could not find Safari.exe.
2019-02-14 23:50:45,716 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 23:50:45,717 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 23:50:45,717 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 23:50:57,378 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 23:50:57,380 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 23:50:57,380 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 23:51:56,084 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 23:51:56,085 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 23:51:56,086 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 23:52:25,535 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 23:52:25,536 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 23:52:25,536 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 23:52:25,536 - PropertiesPanel - WARNING - Property does not exist: _functions
2019-02-14 23:53:03,283 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 23:53:03,285 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 23:53:03,286 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 23:53:10,420 - PropertiesPanel - WARNING - Property does not exist: _form
2019-02-14 23:53:10,421 - PropertiesPanel - WARNING - Property does not exist: _parent
2019-02-14 23:53:10,421 - PropertiesPanel - WARNING - Property does not exist: _uuid
2019-02-14 23:53:10,421 - PropertiesPanel - WARNING - Property does not exist: _functions
2019-02-14 23:54:30,928 - MainFrame - INFO - Could not find Safari.exe.

These warnings can be ignored.

What I’m really interested in is a way to reproduce the issues you are having. Once we can do that, we can take action.