Delete launchpad application by mistake as it back?
I was using my computer, download an application called Music Converter
after that I just downloaded I appeared Launchpad icon in
the launchpad and I thought the app was doubled, remove it and then restart my computer
appeared in the dock and the question mark, find the application and was not.
MacBook, OS X Mavericks (10.9.1), The TrackPad still open