[MKWII] Imported models rapidly degrade over time + Animations not working

[Richmountain112]

Describe the bug Whenever I import a model to a Mario Kart Wii character file, some vertexes are always a bit off. When you open it again, it gets worse. To Reproduce Steps to reproduce the behavior:

1. Open an MKWii Character SZS file and swap a model.
2. Preview it and play some (maybe broken) animations
3. Close it
4. Wait for a few hours
5. Open it again
6. The model you swapped should (somewhat) explode.

Expected behavior I know computer files degrade but it shouldn't be this rapid. This wasn't my first time experiencing this problem with MKWii Files.

Screenshots

Desktop

• OS: Windows 11 Victus HP gaming laptop, Version v0.40

Additional context By "X not working", I meant "model explodes while doing X"

Was working on this: msh_wii.zip

If I were to be honest it is a little bit funny but it's just annoying when you're working on something serious.

[Richmountain112]

I don't know what exactly is causing this; the dev refused to respond.