This new version's ZQ gets stuck in the taskbar after closing, like in 2.50.0, too. Occassionally. Like, every 4th or 5th time. Allegro.log doesn't have anything else appended to the end than when it exits normally (still just a lot of "cleaning..." lines with "bitmaps... ok" at the end). I use Windows 7. It's not a big problem, just saying for reference.