Alright, I've been searching for someone with a similar problem, but to no avail. I tried to open up my map in Hammer, and when I loaded the file, it loaded normally with no errors. The only problem is that there is now nothing in the map, its essentially no different from a completely new file. There are no visgroup tabs. The only peculiar behavior of hammer that I can recall happened the day before this incident. Every time I tried to compile the map to walk through it in game Hammer simply stopped responding and I was forced to close it, however, when I opened it back up everything was perfectly untouched. I continued to try different methods to get my map compiled, but the problem persisted until I basically gave up and shut down my PC for the night. So now I'm here trying to open it up again today, but now the map is completely empty, its all disappeared without a trace. When I tried renaming the VMX file to see if that would work, this was also empty, and I tried to use both VMEX and BSPSRC to decompile the .bsp without any success. I'm not sure if this is an extremely easy to solve issue or a very rare one, since I have yet to find any other thread with my problem. When I try to open TF2 and launch the map from there, I click "create server" and then nothing happens. Autosaves are also not an option because I'm an idiot and didn't realize that you have to enable them before a problem actually arises. Here is the compile log of the map, this should be from the day that it was not responding, though I'm not 100% sure.