I’ve seen a couple of Paratext error reports where Paratext was running fine previously and suddenly started getting errors when it was starting. At least one user said that this occurred after upgrading to Windows 10.
At this point, we don’t know why the Paratext files are getting deleted, but wanted to send out a notice so supporters will be aware of this possible problem.
The only thing I know to do would be to re-install Paratext to fix the problem.
John+Wickberg
Paratext Support