New version 8.5.5 won't open

I have downloaded the newest version (8.5.5) several times now and installed it.
However, when I open AppStudio, I get the pop up that my version ( is out of date.

Did you download it again today? The server had not updated properly for a few hours yesterday.

Still no luck

Can you try clearing your browser cache and downloading again?

that worked. thank you.