http://rpgmaker.net/users/SorceressKyrsty/locker/GlitchPatch.rar

This fixes the issues with being able to return to the train station when you're meant to go to Levi's house (and it points you in the right direction). This also applies with heading back after the Reactor mission- the game tells you that you have to go to sleep ^^.
This also prevents leaving Forest of Despair until you've found all the people. You can also leave it after the area becomes available as a side-quest.

My sincerest apologies to NicoB about encountering that glitch and getting lost!