Board Thread:Tapped Out Help/@comment-141.135.251.248-20150813123708

I'm stuck at the mission: "A Rail of One City Pt. 5" in the monorail uptdate. I don't receive any new tasks. It says: Gather Junk Around Springfield 0/150 and when I want to press the button 'do it', I see that my Springfield Dump is full. Can anyone help me out? I can't continue go any further in the update. I haven't got Homer with his monorail suit yet ... 