Hello Avangel,
The above log means the script was executed and returned error code 1 (%errorlevel% in cmd) .
If you tried a simple script that returns error 0 and this error still occurs, then there might be another problem.
I would start by running the script on a regular machine and verify that it works, and returns a correct error code.
If that is the case, in order to help you debug this problem I would need some logs from C:\Program Files\Wanova\Mirage Service\Logs . namely one of the desktop.log that contains the line:
2013-03-20 16:36:10,648 [ 34] INFO Wanova.Desktop.Service.Ignition Running post Changeset update script
Or alternatively in older versions:
2013-03-20 16:36:10,648 [ 34] INFO Wanova.Desktop.Service.Ignition Running post BI update script
Regards
Dan