Hey Madduck! I was confused as well, do you know what version of blender you used? It could be because I am on a Mac, because I couldn't find any issues or warnings, it'd just crash the second I tried to open the .blend file.
Super strange, i was using 4.1
That could be the issue, I still have blender 3.5.1, I'll try updating blender and see if it fixes it :)