Xcode 4 in my Mac App Store says its installed, but it's not

Question

I can't seem to re download xcode 4 as the mac app store thinks that I already have it. I've had this problem before with another app, but could really do with a solution to this problem now as I need xcode for a new work project.

Any help anyone could offer would be much appreciated.

Answer 1

What you download from the app store is actually the Xcode installer, not Xcode itself. You might have the installer knocking around somewhere even if you've removed Xcode.

Answer 2

Execute the downloaded installer located at

/Applications/Install Xcode/Install Xcode.app