Hi this bug happens since Roblox attempted to move assets from the old library to the new fresh one (The one which doesn’t support extensions like BTRoblox).
And it’s currently very annoying to see its studio place crashing for that.
It happens randomly, some places always crash when I export meshes, others never happen.
I don’t know what’s happening…
(Fortunatately I lost nothing because Team Create/Collaboration was enabled! So I just to export a mesh by opening a second page on a baseplate! It may work!)
Also I’m lazy to make a second post but the Team Create window never refreshes itself, so when someone else leaves, the Team Create Windows still shows the person.