check to make sure that the enviroment variables rpronet and the rprows are there. enter them if they are not
Variable name= RPRONET
Variable name= RPROWS
Value= x (x=ws number)
A second fix for this is. try this as well
what solved it today was delting the print files in the print folder with that WS numbers extension and it worked.
3rd fix for this was the reports.exe process was running in task manager even though it wasnt open. once we killed the process it worked fine.