So, I'm working on a map for a friend. He has Hammer, (comes with TF2, no duh) but I'm making the map for him. I made an update. (Trade map, added boxing ring, fixed some door and clipping bugs, nothing too major) Nearly exact changelog- Added boxing ring made out of brushes. (Glass textures) Teleport into the ring from your spawn. Deck it out, winner suicides. Will improve. Fixed it so the door open buttons (For an alcove in the main room) keep the door open and toggle, rather than leaving the door open for a period of time. Fixed some brushes having unclean transitions down a slanted-downward hallway. I export and open in Hammer, and no changes have been made. It's like the version before, and like I haven't worked on it since last showing him. Here's what we've done- Rebooted Hammer Rebooted My Computer Gave him the .vmf, doesn't work. (Comes up with something from windows about a missing file) Copypasta-ing the map into a new map file Reupdating the first version (this was a map gonig into b3, just did the same stuff to b2, and didn't rename) Deleted the mapfile for b2 from my tf2 folder None of these worked. Any clues? Thanks!