HELP- 4GL RDS -4518 ERROR IN A REPORT IF NOT DBA

HELP HELP HELP HELP I get a 4518 error printing a report in a 4gl rds program. If a print that report as a DBA privileged user everithing works fine. If a try the same print as a CONNECT privileged user, after a certain number of rows i get the 4518 error. The explanation found using finderr seems not to be the matter. The program runs on a Bull DPX380, 4gl RDS run time 4.11.UC2, Se 5.02.uc6 and was compiled on sco unix 4gl rds 4.10.UC4. With a previous version of run time i got the same error (i.e. upgrading to a new release seems not to be a solution). Did anyone find the same problem or have any suggestment? Thanks in advance. Hope my english is understandable. Marco Calmasini. Logica Srl. Via Calatafimi 1/B Venice - Italy