Edit 1: The texture was nature/ground_05. So I load the map w/ light_environment and a few light_spots. Most of the ground is checkers, though not purple; http://i249.photobucket.com/albums/gg204/Immortal-D/tf2error3.jpg http://i249.photobucket.com/albums/gg204/Immortal-D/tf2error4.jpg So I type buildcubemaps in the console, and get presented w/ this error; buildcubemaps Current mod isn't in a subdirectory of "game"! bounce: 1/1 sample: 1/4 bounce: 1/1 sample: 2/4 bounce: 1/1 sample: 3/4 bounce: 1/1 sample: 4/4 *** Error: Skybox vtf files for sky_gravel_01 weren't compiled with the same size texture and/or same flags! Can't load skybox file sky_gravel_01 to build the default cubemap! Various error searching on the web hasn't turned up any results. Any help on this is much appreciated, as it's the last thing standing between me and a beta release.