I have seen some word on running a Top Level form. However, I don't get that with using a Top-Level form. Also what OS is it on? You also may need the DCOM update from Microsoft. I have experienced the crash on a development machine and on multiple client PC's that don't have IE 4.0. I did update them with the latest DLL's from the VS6.0 SP1 update and that simmered the problem down, but didn't completely eliminate the problem. They report having the problem from Forms that have complicated Grid controls with formatting and calculations within the cells. It is very random though when it happens. I have them checking for the System Resources and have been checking to see how long they are running the forms. I don't have any timers running either in one of the apps. Anyone else have any ideas yet? I need to get rid of this problem for my commercial apps as well.