Unable to restore session, resetting.

Traceback (most recent call last):
File "C:\Program Files\ChimeraX\bin\lib\site-packages\chimerax\core\session.py", line 594, in restore
obj = sm.restore_snapshot(self, data)
File "C:\Program Files\ChimeraX\bin\lib\site-packages\chimerax\preset_mgr\manager.py", line 48, in restore_snapshot
return session.preset_mgr
AttributeError: 'Session' object has no attribute 'preset_mgr'

opened ChimeraX session