Yeah, but its strange, this is the error i'm seeing in the production mode,
and in the develpoment mode is different as i said in the message. Im using
the newer versoin of both jdk and jre, appengine and gwt. Bu its x64.
2011/10/1 Francois Masurel
> Hi Bruno,
>
> I don't think it's related to AppEngine.
>
> I've found this after a quick search on Google :
>
> "It means that you compiled your classes under a specific JDK, but then
> try to run them under older version of JDK. So, you can't run classes
> compiled with JDK 6.0 under JDK 5.0. The same with classes compiled under
> JDK 7.0 when you try to run them under JDK 6.0."
>
> Hoping it will help.
>
> Francois
>
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