I have some information that may help. I'm having the same or similar problem in Arch Linux, so this is probably an upstream issue from here.
If I go to Kickoff->Applications->Settings->System Settings, the KCM is missing for me as well. Additionally, the IM Presence widget that I had in my panel has disappeared, and I cannot find it under "Add Widgets". Finally, when I go to Kickoff->Applications->Internet->IM Contacts to open the contact window manually, then go to [wrench]->Instant Messaging Settings, I get a dialog stating, "It appears you do not have the IM Accounts control module installed. Please install kaccounts-integration package." However, that package is installed (See packagelist.txt). Again, I'm running Arch Linux, not Ubuntu or it's derivatives; which may suggest this is an upstream bug. André Stein, can you check if you're having these additional issues as well? If so, we may want re-post this bug report at the upstream bug trackers. ** Attachment added: "packagelist.txt" https://bugs.launchpad.net/ubuntu/+source/ktp-accounts-kcm/+bug/1387987/+attachment/4381827/+files/packagelist.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1387987 Title: Can't configure telepathy/IM accounts in Plasma 5 (system settings module missing) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ktp-accounts-kcm/+bug/1387987/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs