access violation

hi im running iis5 with php 4.04 as isapi accessing an interbase6 database i get the following error : PHP has encountered an Access Violation at 78003ABF this error occurs once an sql statement is run, the sql statement takes a paramater from a select box and then runs.It runs fine for a number of entries except for one entry that bombs it out with the above error. The query should return about 9900 records. The exact query has run once but since then bombs out with the error. I have made no changes and the same query executes perfectly if i run it through IBConsole im pretty sure its a server problem, can anyone confirm this or help out? if it is a server error how can it be fixed? this is quite urgent thanks Wade Wade Halsey WHalsey@btech.co.za WHalsey@rph.co.za Cell: 0835560990 Work: (043) 701 4226