Fiddled around and found out that the missing ckeditor_basic.js wasn't causing a fatal error (The "Loading..." issue). Instead it looks like a non-enabled spell-checker in Horde preferences was causing this.
I enabled spell-checking in horde, and now the composer loads. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1328895 Title: ckeditor_basic.js missing, cannot compose mail in Horde/IMP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/php-horde-editor/+bug/1328895/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs