OneStream support recommended setting Retain All Formatting when saving
offline to True (Found in Preferences in OneStream excel Add-in tab).
This fixed the issue for our users.
Our users are receiving this error as well. They are just using the
'Save Offline Copy' feature available in the OneStream Excel Add-in.
When this error happens, it creates the 'offline' copy of the file but
it is not actually offline as all the XFGe...
