Not working (Assassin's Creed 2)

Immediately after I showed her the blade and she told me about the assassination attempt, flew to the game.When went was in a strange place(but it is in Florenchie and everything looks fine), and the office is not fully functional with the exception of the camera,pause, and wheel arms.Does anyone have any saves close to this place?Or it can be like that backupnode?Or maybe it's just a bug that is how can I fix it?