Still having this issue. When running w/ sudo, it runs fine and loads the dbus library. The line about the dynamic session failing might be a clue? I've loaded the plist with
Starting DBus
dyld: loaded: /Applications/kstars.app/Contents/MacOS/../Frameworks/libdbus-1.3.dylib
dbus[45765]: Dynamic session lookup supported but failed: launchd did not provide a socket path, verify that org.freedesktop.dbus-session.plist is loaded!