Issue resolution
in eclipse do Project -> Clean … (there may be other causes of the error though)Using Dev server remotley
http://code.google.com/appengine/docs/java/tools/devserver.html :- directions./dev_appserver.sh --address=ip --port=8888 <project_path>/war
test app datastore
http://192.168.1.8:8888/_ah/admin/datastore