i have the same problem and i have no idea how to fix it. but there is a way to deal with it. go to the filter of the texture browser and uncheck "textures". now you should be able to go through the browser but it doesnt show up normal textures(only combiners, shaders,etc. including stuff with bumpmapping for example like clonetextures but you will be able to find also quite normal textures for walls, ground and so on).
if you would like to export one of those shaders open the properties of it in the texturebrowser. you will find next to "diffuse" the filename of the real texture (Texture'CloneTextures.CloneTextures.CloneCommando07') for example. then you have to place a staticmesh or something like that in the map and use the normal texture as a skin for it. then go to "in use" in the texture browser-> in use and tick in the filter "textures" again. after that the texture should appear in the texturebrowser, ready for export.
i think it has to do with the bumpmapping-problem.
if youre looking for a specific texture you can also look in the staticmeshbrowser for the name of it and use it that way. still uncomfortable, but it works for me. i hope that helps.
if you would like to export one of those shaders open the properties of it in the texturebrowser. you will find next to "diffuse" the filename of the real texture (Texture'CloneTextures.CloneTextures.CloneCommando07') for example. then you have to place a staticmesh or something like that in the map and use the normal texture as a skin for it. then go to "in use" in the texture browser-> in use and tick in the filter "textures" again. after that the texture should appear in the texturebrowser, ready for export.
i think it has to do with the bumpmapping-problem.
if youre looking for a specific texture you can also look in the staticmeshbrowser for the name of it and use it that way. still uncomfortable, but it works for me. i hope that helps.