500 Internal Server Error with Jersey and Google AppEngine

Problem with Google AppEngine and Jersey with Java

I recently came across a significant problem with Google AppEngine 1.7.2 and Jersey. Whenever I tried to implement my Webservice, I got a 500 error. There was nothing really wrong with the code. So i took a look at the Logs in the Google AppEngine Dashboard and found the following exception:

[widgets_on_pages id="sb"]

Set Datanucelus Version to 1.0 in Eclipse for AppEngine

Set Datanucelus Version to 1.0 in Eclipse for AppEngine