I was very impressed with the signup process for Stendhal – Google Login, quick character creation, and then Java Native Launch.
I was very excited that this might be the first time the launcher worked for *anything*, and it very nearly did...
then it complained with
"Sorry, an error occurred while downloading the update.
The signature of stendhal-data-1.05.jar does not match.
We got 21493202 bytes of 21493202"
I'm on OS X Mountain Lion with Java 7u11.