Eclipse IDE upgrade from Kepler to Luna went very bad

Question

I upgraded my Eclipse IDE for Java developers from Kepler to Luna using the worst possible upgrade feature of Eclipse and it messed up my current workspace totally. I added the update site for Luna - http://download.eclipse.org/eclipse/updates/4.4 and selected all and installed. Then it took an hour to figure out the conflicts and finally when it installed, my Eclipse is behaving very erratic.

1. I can see welcome screen changed and couple of new menu items.
2. Eclipse market place is gone, I don't know how to get it back.
3. Intermittent freezes forcing me to restart.
4. My Grails setup is gone and I can't install from Market was gone.

Can anybody suggest what is the right procedure to upgrade? (I read the wiki and it doesn't work) and I am looking for methods that actually worked for you.

These are the times I some times cringe in pain and crave for a managed or paid IDE, as a simple task like "upgrade" should be so damn easy and click of a button"

Answer 1

Eclipse is notoriously known for being hard to upgrade to a new version in place.

Download and unzip a new, fresh Eclipse and import the extra things you have installed from the old installation.

Then import your existing projects again. Maven projects should be explicitly imported as such.