AppStudio 8.5 stopped starting

1

I was using AppStudio 8.5 and wanted to run a second instance of the program on the same computer. Failed to. I reset my computer.
The program stopped working completely. When I try to open the executable, nothing happens - no error message appears. I tried uninstalling and installing AppStudio.
I deleted the HCU\Software\NSBasic\App Studio key. The program started in demo mode. I entered the serial number. The application has stopped starting.
What should I do to make the program work again?

Log file:
2023-11-12 09:55:56,960 - main - INFO - ****************************************
2023-11-12 09:55:56,960 - main - INFO - * Welcome to NSB/AppStudio 8.5.8.2
2023-11-12 09:55:56,960 - main - INFO - * Starting at level: 10
2023-11-12 09:55:56,961 - main - INFO - * Install Dir: C:\Program Files\NSB AppStudio
2023-11-12 09:55:56,961 - main - INFO - * Frozen: True
2023-11-12 09:55:56,961 - main - INFO - ****************************************
2023-11-12 09:55:56,961 - main - INFO - * Python 3.8.10 (tags/v3.8.10:3d8993a, May 3 2021, 11:48:03) [MSC v.1928 64 bit (AMD64)]
2023-11-12 09:55:56,961 - main - INFO - * wxPython 4.1.1 msw (phoenix) wxWidgets 3.1.5
2023-11-12 09:55:56,961 - main - INFO - * jsbeautifier 1.14.7
2023-11-12 09:55:56,961 - main - INFO - * paramiko 3.1.0
2023-11-12 09:55:56,961 - main - INFO - * pysftp 0.2.9
2023-11-12 09:55:56,962 - main - INFO - * PyYAML 6.0
2023-11-12 09:55:56,962 - main - INFO - * requests 2.30.0
2023-11-12 09:55:56,962 - main - INFO - * verlib (no version in module)
2023-11-12 09:55:56,962 - main - INFO - * Native OpenSSL 1.1.1k 25 Mar 2021
2023-11-12 09:55:56,962 - main - INFO - ****************************************
2023-11-12 09:55:57,036 - main - INFO - Registration: eJxNkLFOAzEMhl+l8gRSL0p …
2023-11-12 09:55:57,036 - root - ERROR - An exception has occurred!
Traceback (most recent call last):
File “AppStudio.pyw”, line 294, in OnInit
KeyError: ‘Developer (Legacy)’

2

Same issue here, I cant open NSB AppStudio. I have tried opening the software directly and by double clicking the myapp.project file and nothing happens.

I’m using Windows 11 Pro, Windows Feature Experience Pack 1000.22674.1000.0
NSB AppStudio 8.5.8.3 (28/09/2023)

3

We’ve diagnosed the problem - a fix is coming today.

4

This should now be resolved. Please let us know if you continue to have problems.

5

If if doesn’t work the first time you try, remove the registry entry. You will need to reenter your serial number.

On Windows, do the following:

  1. Start RegEdit (Windows Start button, enter regedit)
  2. Find HCU\Software\NSBasic\App Studio.
  3. Delete it.

On MacOS,

Delete ~/Library/Preferences/App Studio Preferences. (Don’t see a Library folder?)

6

AppStudio now works. Thank you for quickly solving the problem.

7

It worked for me but only after following your guide to delete the registry entry.

Thank you.