Thanks for all the suggestions. I worked through them one by one and stumpy's solution solved the problem. One cause of confusion was that I copied a texture from a fan mission to my map directory with the exact same path and it displayed correctly. There must be something that happens when the map is packaged that changes the paths from absolute to relative? The information about where to locate custom textures for fan missions is in the wiki but I found it difficult to parse. For anyone with wiki editing rights, you may want to make it a bit clearer. Maybe something like: 'How to add Textures to The Dark Mod' page (http://wiki.thedarkmod.com/index.php?title=How_to_add_Textures_to_The_Dark_Mod) - 'Move the Texture to the right Location' section -- 'Things to remember' box * Custom texture folders for fan missions must be in the Darkmod root folder while mapping. * Custom texture folders for fan missions must be in the pk4 folder for release. Thanks again for the help.