Report canceled with message 'No forms available',

We are stumped.

I created a simple ABAP HR report using the PNP logical database. It pulls benefits info and master data for displaying on the screen. (Associates Eligible for FMLA) No ALV grid, just a simple write to the screen.

The job runs fine in in the background as well as foreground in DEV, QAS, and STA .

But now that the program is in PRD, when we run it in BACKGROUND, the job CANCELS after 10 minutes.

The spool lists the message 'No forms available', several dozen times, and then 'No memory for cua processer'.

Oddly, the program runs fine in forground.

Any clues how I can get this program to run in background?