@TheanineHD Thank you! That's a good find! I'll check (if I can remember next time, heh) soon once I get around to it!

I'll get on capturing the full log soon. The blend file however, this has been happening since Blender 4.0 I believe, in every single file that I create new or carry over from older Blender versions. And my blend files are typically huge so they're difficult to send over.

Maybe this will work, I don't have the time to reproduce it again right now.

https://pasteboard.co/JDJXXAQ1FFjd.jpg

https://cdn.discordapp.com/attachments/1019720419495903308/1435613256550060264/image.png?ex=690c9a88&is=690b4908&hm=1f3afa184f50a3434dcd56827b75b9ec604ee54727aa9ad1ae2c2a28b1482581

This also happens when trying to use SourceIO side by side with SourceTools, blocking function of that add-on entirely.