Where is your Reassembly directory? If you're trying to import ships (assuming you don't mean import as in importing mods, not ships) you would be able to upload them into the game as long as the modded faction's blocks are identified. Also don't know if this really helps but if you don't already know, reassembly mods from the workshop are stored in while the local mod folder is stored in The underlined part in the bit above is just the path to my folder, yours is likely different, although I haven't experimented with moving my reassembly folder to another drive so I have no idea where that folder would be besides in saved games (maybe in the C: drive still?).