IDE 1.6.7 on Ubuntu 16.04


Just installed Ubuntu 16.04 and IDE 1.6.7. When I run the IDE and compile a sketch, everything is OK but when I try to upload it,I get a bunch of error messages–> png file. (It worked fine on Ubuntu 14.04)

Has this something to do with java version ??
Other reasons?

Thank you for your help

Solved by myself --> link (permissions for serial port were not set)