Error firing vbld_StepDone event

[Bounster]

I am using VSS and just trying to get a history of a project since the last label. I would get this error when the retrieval gets to the label specified.

Error firing vbld_StepDone event: Error in System script code at Line 108, Column 2 (Input past end of file)
Step 'Get History of Project' failed

What am I doing wrong and thanks for any suggestions.