MS Access Illegal Operation Error

I am developing an Access Application wherein I use the SendObject function of DoCmd. The application works fine on my local workstation, but when I moved it to our NT Server for multi-user access and the program is executed, I get an “Illegal Operation” error whereby “MSAccess caused an invalid page fault in module KERNEL32.DLL ………..”.
If I comment out the line of code containing the DoCmd.SendObject, everything works fine
(i.e. no invalid page fault). The Server is a Compaq Proliant6000, with four Xeon400
processors, 512MB RAM, running NT4 SP6a.