May I ask as to where you place these textures? If there is no script for it, it may be that it comes from a WAD. Every image has a mention in a script. What is it that you applied the texture to? A model outside of WED? A height map? Any other entity? What size is the Image? Does it fall into the multiples of 2, 4, 8, 16, etc. rule? Is it a supported texture by your engine? Answers to these might help us to help you. I'm not trying to be snippy, I really would like to help you...