Xcode 4.2 on Lion— App store thinks the app is already installed

Question

Is any one seeing the issue I m facing. I am trying to upgrade to Xcode 4.2 on my Lion and the app store says it is Installed.

I had a developer preview of 4.2 may b

Answer 1

I found the solution I had to Delete the "Install Xcode" app from ur launch pad for your Xcode to upgrade to 4.2.