Many players were getting stuck every once in a while and were confused about where they were supposed to go. Last month we cobbled together a walkthrough as a temporary band aid, but it's not a very convenient solution, so we implemented a quest log in 0.6.
Good news is you don't have to start a new game, quest log will look through your save file and show you relevant information.
Quest log has 7 big quests, some of which have dozens of steps. We'll add another quest about Lisa and Vicky in the next couple of days. Quest in a quest log, I mean, and not, like, completely new quest :)