Error 500

Hi. Seem to be getting this more and more as time goes on:

2013-09-17 09:05:23,824 WARN [ServiioStatusService] NoClassDefFoundError occured. Returning error code 500 to the REST layer. Message: java/lang/Throwable$WrappedPrintWriter

Always have to reboot to start up again.

Thanks.

[zip]

I'd try to uninstall and install again your Java