If you use the Star Wars addon, then that could be the problem. There is an error in the 'Malastare.sc' file. The error causes exactly this problem. If this is the case, here is a corrected version of this file.
Yeah there are, I actually left those in on the off chance I ever get around to making more duplicates. Alternatively SpaceEngineer has said in the future you might be able to list alternate textures for one model and switch logos.
Remains to be seen what I will do with those.
Intel Core i7-5820K 4.2GHz 6-Core Processor G.Skill Ripjaws V Series 32GB (4 x 8GB) DDR4-2400 Memory EVGA GTX 980 Ti SC 6GB