some mod makers do that on purpose to force people on the server to dock on planets with bigger ships . it is the same with the epsilon mods they made on really big ship that only docked with planets only. can you use a moor sometimes a mod maker will make the moor work when you cant dock. anyway ask your question on the discovery site to get the best help.

http://discoverygc.com/forums/index.php?act=uportal