The problem was resolved. Apparently, it was caused by a coding error resulting a Null Date argument.\n\nAs per Sir RJs findings, the Ingres Version 10.2 returns an error ?IIRelation Error?.\nThen he runs the same script (run and develop in vb .net) connecting to Ingres Version 11.1\nthen the returning error pertains to ?null date?. So he just make adjustment to\nhis script and run it again in Version 10.2 and the problem is resolved.\n\n\nThis case will be closed.