Make sure there is not a hidden error in one of your .xml files.
Sometimes you can delete a statement in the strings.xml file that is important.
For example, in the Vogella example, I got the error:
Error: No resource found that matches the given name (at 'title' with value '@string/menu_settings').
I had deleted the line:
Settings
Putting this back in or deleting res/menu/main.xml would solve the error.
