So I have a bunch of rectangular glass windows in my map that use the texture glass/glasswindow001a. After I compile when I start up the map, the glass contains a purple and black checkerboard texture. So I run all the proper cubemap procedures: Code: map <mapname> mat_specular 0 buildcubemaps disconnect mat_hdr_level 0 map <mapname> buildcubemaps disconnect mat_hdr_level 2 mat_specular 1 Then I run the map and the glass textures work fine - for me. Now the problem I have is that when I host a server with this map, each client has the same problem of the purple and black checkerboard looking into the glass. I don't want to make every client that plays on my server have to build their own cubemaps, is there something I'm missing?