Install two version Xcode, 4.2 in /Developer and 4.0.1 in /Developer2, located in different directory on theory both of them should work well, no disturb between the two, but the fact is that now neither of them can launch successfully.
My questions:
1, Is it possible to let them coexist? If yes, possible error for my installation?
2. How can I find more clues why launch failed?
Any idea or discussion will be appreciated, thanks in advance.
@bandejapaisa is correct, I have 3 on my machine; you can un-install these xcode (remember to restart after each un-installation) and install one by one; it should work