Custom report crashes in sceduler

 Custom report crashes on scheduler. Its a  simple report with few lines of code. It does not have any Business view attached. Which does only few Table i/o - Delete operation.

I checked the ER dump. It shows the presence of IR variables (report interconnect), ie, this report is being called from somewhere.  But i could not find out where its called from.  By inspecting through XREF, it shows this report is called by this report only !!!!!  Xref shows the same report name !! how come?? I checked the code..... but nowhere i could find a CALL operation. 

Is this any package build problem?