When executing a data flow from an activity , its failing because of Null Pointer Exception at the "DataFlow-Execute" step.

I have configured the source of the data flow as abstract , as it should take the step page of the activity as source. The same data flow when i execute stand-alone by changing the source to a Report definition (which opens the same record as the activity), it works fine.

Attached the tracer extract and screenshots of the activity and data flow.

Any resolution or comments will be helpful.

Thanks!!