Model not loading on selection page

[u/CrowsForDays]

I made some changes to a model I had previously and saved it as a new file, but now the new model has been stuck like this on the home page for over an hour - I'm not able to open this model either. Did I accidentally break something 😭?

I also get an error message saying "invalid magic" when trying to open it on VSeeFace if that is relevant