Assert Failed: Internal Error.

Hi, folks I have an application made with Informix 4GL. The last days we have had some errors when a Select is executed. This Select use two tables. The second table is used only for where clause. It happend only sometimes, not ever. The versions we have are: NCR MP-RAS Informix 7.24 UC1 4GL RDS 7.20 UD4 These are some errors: ( If you need more information, please contact with us ) 13:19:03 13:19:03 Assert Failed: Internal Error - Segmentation Violation 13:19:03 Who: Session(27, rfi@ZEUS, 5792, 282669124) Thread(53, sqlexec, 10d70ed4, 3) 13:19:03 Results: OnLine must abort 13:19:03 Action: Reinitialize shared memory 13:19:03 See Also: /tmp/af.352587, shmem.352587.0 13:19:03 Stack for thread: 53 sqlexec base: 0x11023028 len: 36864 pc: 0x08400cf7 tos: 0x1102b13c 13:19:05 ------------------ End of assertion failure 0 ----------------- 13:19:05 13:19:05 Assert Failed: Segmentation Violation 13:19:05 Who: Session(27, rfi@ZEUS, 5792, 0) Thread(53, sqlexec, 0, 3) 13:19:05 Results: Fatal Internal Error requires system shutdown 13:19:05 Action: Restart OnLine 13:19:05 See Also: /tmp/af.352587, shmem.352587.1 13:19:05 Stack for thread: 53 sqlexec base: 0x11023028 len: 36864 pc: 0x08400cf7 tos: 0x1102b158 13:19:11 ------------------ End of assertion failure 1 ----------------- Thank you, in advanced. jhernandez@geuropa.com