Vista - Task Scheduler Compatibility module task status update failed

I have a simple .bat file to Robocopy folders and files to an external shared drive for backup.
The .bat runs ok if I launch it.
It does nothing if I launch it with Task scheduler.
I get this error in event viewer. I don't know how to interpret the error.
Any help?

Task Compatibility module failed to update task
"User_Feed_Synchronization-(90573B48-7F1A-49EB-B0E2-630E54FB2F9A).job" to the required status 0.
Additional data error value 2147943732.
Thanks
Frank C

Task Scheduler Actions tab > Edit Actions > Program/Script entry must not be surrounded with quotes It is if you use the Browse button to find your file to be executed.
Mine looked like this:

"C:\Users\Owner\Desktop\System Tools\CopyTask.bat"

I renamed System Tools to System-Tools. I removed the quotes. Now it looks like this

C:\Users\Owner\Desktop\System-Tools\CopyTask.bat

and it works!

I am now trying to get the wake-up user logged on or not combination to work
Frank C

I had one more problem getting Robocopy to work under Task Scheduler.
Since my backup drive is a shared network drive the destination was not found. I got this error:

2009/08/15 20:20:00 ERROR 3 (0x00000003) Creating Destination Directory S:\Shared-Music\BackUp-Test\
The system cannot find the path specified.

I learned that using the UNC addressing scheme could circumvent accessing a mapped network drive problem. I used the CMD prompt and the NET USE cmd to get the format. I changed My Robocopy cmd from :

Robocopy C:\Users\Owner\Music\recordings\BackUp-Test\ S:\Shared-Music\BackUp-Test\ /Log:TaskSchBkupLog.txt

To:

Robocopy C:\Users\Owner\Music\recordings\BackUp-Test\ \\externaldrive\public\Shared-Music\BackUp-Test\ /Log:TaskSchBkupLog.txt

This is working! I hope that my experience may help others.
Frank C