So ... just to be sure the problem wasn't on my end I decided to download something else and - lo and behold - I ended up with another corrupted file. It seems my router had developed a glith and was the problem all along.
Anyway, the EXE ran and installed the mod just fine after I reset the router - with one exception ... the "RFC Earth with big Europe 50 civs - " etc. etc. file failed to install, but I suspect that is due to max filename lenght being exceeded (255 chars is max and this includes directory path - you might want to cut down the name of that file).
Btw, I just realized I should probably have posted all this in your bug thread - heh.
No problem. It's good that it is working now. But I'm a little bit confused because others had the same problem too.
