For once the mods did something right
My computer doesn't show file extensions. I added one to the file before decompiling but it didn't help. This might be relevant, It flickered something like "Not a valid Binary GMF file" for half a second when I tried to decompile. Also the program itself displays as a DOS application rather than the GUI that Serge showed on the first page. (Image removed from quote.)The component I'm trying to duplicate is the Slim Wheel, incidentally