I had the same issue with english packages, java exception on loading the webstart-app was "java.net.UnknownHostException". It seems that 32bit DNS resolving was not working, installation of the package lib32nss-mdns resolved the issue for me.
I had the same issue with english packages, java exception on loading the webstart-app was "java.net. UnknownHostExce ption". It seems that 32bit DNS resolving was not working, installation of the package lib32nss-mdns resolved the issue for me.