Plot/puzzle spoilers ahead, so don't read if you're not a dev!
I've got episode 3 of Hector on my iPod Touch 4G. When I got to the clock tower, I got the bomb out of the guy's head, but then left the tower using the map. I wandered round the fair a bit, got the file and freed the prisoner. A bouncy castle had mysteriously appeared in place of the beer tent, which was odd. But when I went back to the tower, it has already been destroyed. Note, I hadn't blown it up myself. I could pick up the barber pole thing, but after that I'm unable to progress. If I go into the hints system, it tells me to use the bomb on the bell, which I obviously can't do. I presume it was my leaving the tower that caused this glitch.