I asked on the pyside mailing list, http://permalink.gmane.org/gmane.comp.lib.qt.pyside/4568
it seems that its an issue with using a pydebug interpreter and a non debug version of pyside. I am currently looking into this PPA (https://launchpad.net/~forger/+archive/pyside-debug) to see if it is a workaround -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1182541 Title: Cannot debug pyside applications To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pyside/+bug/1182541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs