I'm affected by this as well. When I try to start any of okular, VirtualBox (the qt GUI), kmail, or AFAICT anything that uses qt4, I get
$ kmail Cannot mix incompatible Qt library (version 0x40804) with this library (version 0x40801) zsh: abort (core dumped) kmail $ okular Cannot mix incompatible Qt library (version 0x40804) with this library (version 0x40801) KCrash: Application 'okular' crashing... KCrash: Attempting to start /usr/lib/kde4/libexec/drkonqi from kdeinit sock_file=/home/jun/.kde/socket-jun-MacBookAir/kdeinit4__0 Warning: connect() failed: : No such file or directory KCrash: Attempting to start /usr/lib/kde4/libexec/drkonqi directly Cannot mix incompatible Qt library (version 0x40804) with this library (version 0x40801) $ anki Cannot mix incompatible Qt library (version 0x40804) with this library (version 0x40801) zsh: abort (core dumped) anki I've tried recompiling okular from the source package, but I got the same exact error. This has rendered many packages completely unusable for me. I think this bug deserves a high importance rating, unless it's rare (i.e. affecting few people), because AFAICT for those who are affected this bug is seriously crippling. -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to qt4-x11 in Ubuntu. https://bugs.launchpad.net/bugs/1166102 Title: Cannot mix incompatible Qt library To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qt4-x11/+bug/1166102/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
