Xcode showing version 6.3.2 after installing 6.4

Did you let the new 6.4 install write to /Applications without a name change?

I installed from the App store.

The App store showing that I have Xcode 6.4.

I am not geting what you mean by your question. I need more information about your question.

Did you rename and/or move Xcode after it was installed via the store?

Did you try running Xcode from LaunchPad?

How many versions Xcode do you have installed? What are their names?

No did not do anything with Xcode after install from store.

I open xcode by double clicking .xcodeproj or from finder --> Applications.

Now I tried Lauch Pad that also showing 6.3.2

I have only Xcode 6.

If you go back to the store, does it still show 6.4 installed?

What happens if you restart your computer?

How many users on that computer?

Me and guest are the only users.

I finally removed old Xcode and reinstalled Xcode 6.4. All good now.

Good info - thanks for the followup.