when my client logs in on the website,it kick them out and im getting this error

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</div> <div><div>Error: File /report_vehicleHistory.asp  Unexpected error. </div><div>A trappable error (C0000005) occurred in an external object.</div><div>The script cannot continue running..</div><div></div> <div></div><div>Faulting application w3wp.exe, version 7.0.6001.18000, time stamp 0x47919413,</div><div>faulting module ObserverDLL_800181.dll, version 8.0.181.0, time stamp 0x4a0ca247,</div><div>exception code 0xc0000005, fault offset 0x00f4def6, process id 0xe4c, application start time 0x01ce7277e3effc81.</div></div> <div></div> <div>please help, how can i fix this</div> <div>thank you</div> </div> </div>