I reinstalled windows recently, and now I'm having a problem with Hammer 3.4 I've never had before. When I save a map, it doesn't look like it's saving as an RMF. There's no file extension; it's just labelled as a "File". It opens and saves in Hammer just fine, but I can't compile it. Also, it's saving an extra "File" to the same directory with the same name except that the last letter is replaced with "x". I try adding .rmf to the filename and openning it, and Hammer gives me this error:
Oops! SerializeRMF() v2.2 tried to load a file v0.0. Aborting.
:....(
Edit: I've tried reinstalling hammer.