4gl report problem

Hi, It's some time that I've this problem : there is a big application that launches a 4gl report piped to printer of just 1 or 2 pages (with no large data but with just the ascii-code needed to fill a form) that interrupts it's output randomly without an error message nor a final FF code. Since the report runs repeatedly the successive form output starts at the point the preceding output cut off. This happen only if the application produces a large spool and I must bypass the problem printing a single form at time. As I wrote, the process don't signals any error, so I think that the problem lies on the pipe process called by the fglgo probably due to a lack of system memory (or resources) but I don't know how to trap the error and to reconfigure the system. ...and, yes, I already tested the application on a different printer. This is my box: HPUX server B. 10.20 B (HP 9000/871 D370) 512MB Ram 890MB Swap Informix DS 7.31.UD1 Informix 4GL 7.30 UC2 pcode V.730 TIA, S.