This could be the answer. The /usr/bin/javaws file from openjdk-7-plugins is looking for the openjdk-7 runtime:
kemel@torresmo:~$ head /usr/bin/javaws #!/bin/bash JAVA=/usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java LAUNCHER_BOOTCLASSPATH="-Xbootclasspath/a:/usr/share/icedtea-web/netx.jar" LAUNCHER_FLAGS=-Xms8m CLASSNAME=net.sourceforge.jnlp.runtime.Boot BINARY_LOCATION=/usr/bin/javaws PROGRAM_NAME=javaws CP=/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/rt.jar I have changed it for: #!/bin/bash JAVA=/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java LAUNCHER_BOOTCLASSPATH="-Xbootclasspath/a:/usr/share/icedtea-web/netx.jar" LAUNCHER_FLAGS=-Xms8m CLASSNAME=net.sourceforge.jnlp.runtime.Boot BINARY_LOCATION=/usr/bin/javaws PROGRAM_NAME=javaws CP=/usr/lib/jvm/java-7-openjdk-amd64/jre/lib/rt.jar and it seems to be fixed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/969520 Title: IcedTea Java Web Start fails to open .jnlp file To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/icedtea-web/+bug/969520/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs