I get the same thing doing the story mission in Sierra II. Can fight the ships but when I try and beam down to the station, game just hangs. Another one of my fleet guys had the same issue in another quest.
Yes I have two characters that I logged off on New Romulus with, and now can't get back on either of them. I have a third that's at ESD that loads perfectly. Please relocate my Rachulla@mikenight00 and Tashmel@mikenight00 to ESD/First City so that I can finally access them.