Oh lordy, he's got nasm98bf-win32! It's an "installer" I cooked up ages ago as an "experiment. Definitely not what you want! The code is from "bugfixed" 0.98 - a couple of the first bugs we found, but with no "improvements" (since they were causing trouble)... Plenty of bugs remain, including the BUFFER OVERFLOW!!! Please use 0.98.39.
Shouldn't have trashed win.com in any case. Are you sure it was the Nasm installer that did it? If so, I want to know about it. We may want to pull that file. Thanks for the feedback, even though I don't think it's a "Nasm problem".
Best,
Frank