title: Why does Eclipse consider that the app engine sdk jar is the directory where the app engine SDK is?
body: <p>I have a Google App Engine project imported in Eclipse. For some reason when I go to Eclipse project properties the Google App Engine SDK seems to be saved as the location of the jar (appengine-api-1.0-sdk-1.4.0.jar) instead of the location where the actual SDK is.
  If I modify the settings of the project to use the correct SDK, the new setting is not saved.
  Because I can't modify the setting I can't deploy my application from inside Eclipse anymore.</p>