So I was working on a map one day and prior to an update all my compiling was fine. Doing a simple routine map test I tried compiling, vrad crashed 3 times. A little frustrated I restarted Hammer, I had really really bad vrad errors in my map. Deleting everything but the .vmf I tried recompiling, I got an error saying it couldn't find the .bsp. I said screw it, copied all my geometry over to a brand new .vmf (I left out things like my lighting and my payload cart), tried compiling again and it said I couldn't find the .bsp.. On a completely new map. I quit mapping for a few days, came back yesterday and opened up a new file. About a day worth of decent work I save it and hit compile, just to get this. Trying various things to fix it like doing a skybox around the whole map for example, nothing worked. It couldn't find the .bsp. This makes absolutely 0 sense since there never was a .bsp in the first place. I reinstalled Hammer and it didn't fix anything. Then I tried compiling nothing, just black void, and I got this. I hit cancel just to get this. This is really depressing, being able to map but not being able to playtest and see my progress sucks to say the least. Any idea's on how to fix this?