Ships, and all related with the mod, should be in the same folder, as you did. Would be better organized. Edit. Something I have seen is that, with crewmanifest (the one with I found it), if the folder is named CrewManifest it works perfect, but if it's called uploads-2013-05-CrewManifest_v0_5_2_0 , the zip file name and name ksp uses for the folder, the icon is not properly showed. Can you use the real name in the zip and not the zip filename? Or you wanted to do this that way? Maybe you check installed mods comparing filename with foldername, don't really know. This could avoid future problems... maybe.