The Factory Commander was updated:
Ver. 126.96.36.199: Fixed item #324 – app crashes when clicking the rename button and then a different item while renaming an item
Ver. 188.8.131.52: Fixed item #322 – app might crash when renaming / copying / moving single item on machines with US region settings; uninstall and re-install might be required for this fix to take effect
Download the latest version from the Windows Store.