Just tried to debug an issue in my game and noticed I am unable to start the profiler.
The button simply doesn’t do anything when I click on it.
Windows 8.1, laptop, 64 bit
This is know and already fixed for the next update 
You can stay under b89 if you want use the profiler.
Oh ok, I’m not using b89 though.
Sorry, I forgot to include the version I’m using, which is b91. I will probably not go backward on installations - tbh, that’s really a pain to keep having to do when something doesn’t work properly, particularly when the program ignores auto-update settings.
I reported the auto-update issue on Github, but never got a response other than from someone who assumed I was working on a fix.
Can you delete your preferences folder ?
C:\Users\Bouh\AppData\Roaming\GDevelop 5
(You can make a copy before if you want go back)
You can also test to add the argument in your shortcut.
-disable-update-check
Also don’t click on “Check for updates” if you want stay on a previous version.
I just updated to b92 and it works. 
I explained above and in my report that there was a problem with auto-update settings where disabling that option wasn’t preventing updates (I said “the program ignores auto-update settings”).
This may have been an issue in b89 only though; it seems fine in subsequent versions.
Thanks!