SysEvtCol does not start

When start service "ManageEngine Eventlog Analyzer 7.0" on WINDOWS 2008 R2, SysEvtCol start and stop returning the subsequent error inside file eventlog.out

Connecting to driver failed
Error in opening DB Connection 2

If you start the application from Menù (run.bat), all seem to work except that events are never written on DB.
The version installed was 7.2 with MSSQL Database

I removed the ver. 7.2 and install 7.0.
Same problem for the SysEvtCol program (isn't started if launched as a service) but if started as local application it work and the DB get the events

Someone can give me suggestions about how to solve this problem ?

Tks a lot in advance
Stefano Consonni