I installed the jme 3.1 beta and when I start JME I always get the following message.
The SDK starts if I click okay, but it would be better if don’t have to press “Ja” (Yes) every time.
Maybe someone came across with this and could give me a solution. 
See you!
Which installer did you use? If you use the platform independent installer or built it yourself the JDK isn’t included and can thus not be found. The path is set in the jmonkeyplatform.config file in the etc folder, just comment it out to use the globally installed JDK.
Yeah, you were right !
Now it does work perfectly, thank you normen 