Talk:Mr. General (Set)/@comment-68.11.121.198-20140214205944

I had 2 Mr General sets. I sold one set back because it told me I had more than the allowed sets(allowed is 1). I still have one set active, and when I try to buyback the other set, all of the cars and the engine have a padlock in the lower right corner. I cannot buyback the train set, hence I cannot complete the quest. What do I do now?