Alright so I was just testing my map out to see if I finally fix my lighting issue, only to discover when I put the compile log at Interlopers.net it said that my skybox wasn't HDR. (Whatever that means) It also told me "Make sure you don't specify the last three letter (_UP, _DN, etc) of any skybox texture you use." and I have no idea what this means either. It then tells me that my VMT files may be broken (I have no idea what these are either nor how to fix.) Now I did went back to the web page where I get my skyboxes at and did replace the skybox with a HDR one, so it has to be the other two. But like stated before I have no idea what it's asking for, so please help me figure out what it means. Thanks.