Thanks, that would be a major problem. But the shader code still doesnt work, I suspect I didn't add it to the shaderlist.txt properly, could you explain the process is which you add it to the shaderlist.txt? I simply ran a search for 'shaderlist.txt' and found 5 results, I was able to find out two seemed to be related to q3/netradiant, both were different. I just added 'CLTM' to each one, is there another step I have missed?