Is the version 8 still on your home machine?

No. Version 8 was not forward-compatible with version 10 (no surprise there) but v10 was backwards compatible with v8, so there was no reason to keep v8 around.


Right click on the BMF file and go to "Open With". What is it showing there in the case of a working and also a broken file?

Both instances say "FloorPlan 3D Application"

It is not the same error message that shows up when I double-click on some other kind of file that does not have a file type assigned. In this case it is saying Windows cannot find the file. Yet, obviously it is there because I can open it through the FP3D program, and of course Windows Explorer is seeing it. I can move it, copy it, rename it. If I do any of those things, the moved/copied/renamed file still will not open by double-clicking. It is doubly perplexing that I can double-click to open a .bmf file that came from another computer as long as the copy of v10 on my home computer hasn't had a chance to sniff at it yet. And triply perplexing that the identical program, installed from the same CD to the same default directories on my work computer does not give these problems.

One final bit of data: If I double-click and get the "...can't find..." error message, the FP3D program opens, and I can then go to File/Open, browse to and open the file in question. However, when I finish editing, I can save the work but when I try to close the program it usually crashes.

At Tony's suggestion I tried turning off DDE, and I thought that fixed it -- but it only worked because the first file I tried to open afterwards was a "virgin" file that hadn't yet been touched by the FP3D program on my home computer.

tanstaafl.