Mikhail Moiseienko
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Mikhail Moiseienko
It can help you to solve this issue: http://stackoverflow.com/questions/24924966/xcode-6-strange-bug-unknown-class-in-interface-builder-file
This bug is connected with animation. I was trying to select menu's item when animation didn't finish. So it didn't work. If you change animation options to _**AllowUserInteraction**_ in **_showMenu()_**...