several java errors messages after installing.

I have installed mirthconnect 3.1.1.7461 on a PC with Ubuntu 14.04, openjava 7. It was succefully. But at the first time I logged as administrator, it was shown several java erros, as picture attached. After click several times the button "close", the system remains with the picture showed "Please wait Loading channel editor". You have switch off and on again the system in order to come back to normal state.



I would appreciate your help.



Best regards,

Attached Images

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several java errors messages after installing.