Thank you very much for the provided logs, unfortunately it did not shed any light on the issue. Would it possible for you to turn on the DEBUG log, so we can capture at more information?  If it's not too much trouble for you could you please open the file C:\ProWin20\32bit\protax20.exe.config in notepad, and at the line 82, which is how it appears on my machine:

and change it to DEBUG as:

After you had changed, please launch ProSeries, do efile as usual, and immediately after, please use the Send Logs to mail us the latest log files.  Once you had sent the email, please revert it back to INFO.

If it's too much problem, don't hesitate to contact us, we will schedule a troubleshooting session on your machine.

Thank you very much for your time!