Peter: I am still flying FS2004 with Wideview with registered versions of FSUIPC using Vista 32bit. I have 3 new client PCs. Two of the clients I had already installed FSUIPC and registered them. No problems. Just yesterday, I installed FS, Wideview and FSUIPC on the 3rd client PC and when I went to the drop down FS modules menu to register FSUIPC and clicked on FSUIPC, I got a black screen (CTD) that required a reboot. But another strange thing is when I went to the other 2 PCs to check the FSUIPC on them, the same thing happened when I clicked FSUIPC, both black screens that required a reboot. On one of the PCs I deleted all the FSUIPC entries in the modules folder and reinstalled the FSUIPC.dll file, but the same thing is happening. Any ideas on this problem? My server PC FSUIPC works fine. Thanks, Al