See this long running thread
This is a core problem with this software that gets worse with each year/release. More and more people are affected by it and as far as I can tell there is no actual solution provided, just a lot of copy/paste junk. Including the totally useless link they keep posting to the support page where it remains absolutely impossible to create a ticket or to get to a real support person via the phone tree.
The "fixes" such as "your file is encrypted" or "you have to login before saving your file" are totally incorrect. The files that get created aren't just corrupt, they are actually completely blank - there is NO DATA TO RECOVER in them so there is no fix.
