WowAce

What steps will reproduce the problem?
1. Enabling the mounted addon.
2.
3.

What is the expected output? What do you see instead?
Game expected to load - the blue bar gets ubout 1 inch across the screen and then hangs.

What version of the product are you using?
The most recent.

Do you have an error log of what happened?
No.

Please provide any additional information below.
I've tried disabling all other addons.  Others also caused 4.3 to hang, but Mounted alone produced the problem by itself.

Just install the latest beta of LibTourist:

http://www.wowace.com/addons/libtourist-3-0/files/122-wow-4-3-beta1/

If you use Curse Updater, make sure to set Preferred Release Type to beta or alpha.

That will fix Mounted.

Mounted just needs to be re-tagged to package again in order to fix the issue (assuming it will pick up the HEAD revision of LibTourist; if not, LibTourist also needs a release tag).