Imported rig is only intact with Revit preset

[Ryawy]

I have always used the "Autodesk Media & Entertainment" preset and nothing happened. Rigs would import normally. Now when I use it, they come in mangled. Revit imports cleanly, but it's unrigged and does not save the animation.

Everything was working fine yesterday. Rigs were imported as normal and I didn't change anything to my knowledge.
Is it possible that installing Blender could have affected something? I uninstalled Blender AND 3d Max, then reinstalled 3D Max and the problem is still there.
I'd like to find out what caused this problem in the first place, and hopefully fix it or find a workaround. I don't know why this is happening.