Well, whaddya know? SCRRUN.DLL DID THE TRICK!

I can now run MXOP. That oughtta keep me busy for the next few nights. . .

Bryan and all the others who helped, THANKS. I do appreciate the time and effort you put into solving this perplexing problem.

What I did was to install SCRRUN in my WINDOWS\SYSTEM folder, registered it, and then gingerly clicked on the MXOP icon, and it ran! Then, to see if the business with COMCAT and the other files had been necessary, I replaced those files with my original ones, running MXOP after each change. It worked every time. Just to be on the safe side, I changed them back to the VRRUN60 files so that all would be consistent.

So it looks like the missing scripting file was the problem all along.

Hope to hear from Brian B and Kevin L to see if this fixes your ActiveX error problem as well.

Jim