Outlook caused an invalid page fault

I am getting the following error message when closing Outlook 2000 on a Win98 2nd Ed computer:
Outlook caused an invalid page fault in module KERNEL32.DLL at 0167:bff9db61. It goes away after clicking close. I can’t find anything about this specific error message in MS Knowledge Base. I have more info on the error message if you need regarding the registers. I’m just trying to make it stop or should I not worry about it. Could this indicate a bigger problem with the OS or hard drive?