The main scene is corrupted for me? I haven't seen any other comments related to this so it might me a problem on my end but It keeps saying the file is corrupted whenever I try to open it.
Probably ude to Jolt plugin. Delete the plugin and reinstall it from AssetLib.
Also, on 4.4, there is no need for Jolt plugin since it's integrated into Godot. You just need to update the Physics to Jolt in Project settings after deleting the plugin.
