I was trying to compile one of my maps in Hammer, and when the game launched I was presented with a black screen and error: Can't find background image: console/materials/background01.vmf. I opened up HL2 and tried to manually run the map, but it didn't even show up in the console. I checked my maps folder, the BSP was there, but I still couldn't run it. Anyone know what the problem might be, and if yes, do yeh know a fix?