Patch 4.0.1a

The following issues have been addressed in the 4.0.1a minor patch.
 * Using a "/cast!<pet ability" command no longer disconnects players.
 * Mousing over objects that generate a cogwheel should no longer cause the client to freeze or disconnect.
 * Guild Tabards should no longer display on characters not actually wearing the Guild Tabard.
 * Floating combat text should always appear.
 * NPC Health Bars/Nameplates are now appearing correctly.