Here we go again: Houdini 22 has just been launched, and we need tk-houdini to work with the new version.
Right now, no menus or shelf whatsoever.
H22 is using Python 3.13; I’m not sure if that’s the problem.
No errors in the log.
Just checking, are you on the latest tk-core and frameworks/aps?
Yep.
What if you try to manually start the engine? Maybe that way you get some output..
Yep, my custom bootstrap is working fine, but I don’t know how the toolkit builds the menus at startup and how to debug that.
Thanks for pointing that out, but I’m no expert at building such complex apps, so I don’t know where to begin debugging it.
Any news?
I remember similar issues the last couple of Houdini versions and usually the fix was copying one of the folders in here
To the right python version name. So in this case I would try to copy python3.11libs to python3.13libs and see if that works. 
The trick worked, thanks!