just install the new version of Xcode (7.2.1), he took a little longer than expected.
But when it finished and run the xcode continues with version 7.1.1
I thought it would be solved by restarting the Mac, but no.
Any idea what can be spent? or happened to me to be done?
My MAC version.
My xcode options
I had exactly the same problem. I installed 4GB large 7.2.1 version of Xcode from the AppStore over an existing 7.2 version, and whichever way I was launching Xcode it was always the same old 7.2 popping up. What was worse I could not download 7.2.1 again, as AppStore app was not showing Install button anymore, but rather Launch button instead (like it was installed).
Finally I found a solution. I went to Downloads for Apple Developers site (a login to a developer account was required), I dowloaded Xcode_7.2.1.dmg 4.7GB large from there, launched an installation... which successfully replaced the older 7.2 version of Xcode.