>>>>I have basic application built with my main form as the top level form. So as
>>>>is tradition, I set SCREEN=OFF in my config.fpw and set _SCREEN.visible=.f. in
>>>>my main program. It works great on most systems, but for some reason on a few
>>>>systems when the application first starts it says Explorer has caused an
>>>>invalid page fault. I click ok and the application runs fine thereafter.
>>>
>>>Oh, I recognize that one: we have a KB article on it, if I recall correctly.
>>>I'm sorry I can't look it up for you right now, but I'm at the library, and
>>>it isn't finding support.microsoft.com for me.
>>
>>I've scoured the Microsoft KB and can't find anything about it. There is an
>>article about a C000005 error and how DCOM 98 fixes it, but I don't get the
>>C000005 error and I do have DCOM 98 installed.
>
><*groan*> That's why you couldn't find it: I wrote it, but it was bounced back to me because I couldn't give specific steps to reproduce. Sorry about that.
>
>In any case, it has to do with the version of Point32.exe on the machines. Upgrade to the latest Intellimouse drivers, and it should work properly.
>http://www.microsoft.com/products/hardware/mouse/driver/ Apparently, another possible resolution is to remove MSWHEEL.EXE, but I'd try upgrading the drivers first.

Updating the intellimouse drivers fixed it! Thank you so much! What a load off my mind. Certainly not a solution I would have ever considered myself.