That business about 'April' and 'may' threw me off for a minute
From the MS-DOS prompt on the VEPA server you are trying to configure,
cd \Program Files\Omniback\bin
vepa_bar.exe --check-config
vepa_bar.exe --virtual-environment vmware
vepa_bar.exe --host [vware client] Donot include teh [ ] marks
The expected return from each of these is RETVAL*0*
Hopefully, this will narrow down teh problem