Rythal
I'm also running 5.1.2 which appears to be fully functional except of course it's missing the maps for the new zone. There is one issue I've noticed however, when the main map is opened and you cursor over the various zones it no longer shows you the details of the zone you have your cursor over. As I have mine set to show details for max of 3 zones it would cycle through each as I moved my cursor over them but now it just appears to be stuck. It changes appropriately when you actually move your toon through the zones but this way I can no longer see the flight paths, inns, etc. without actually entering that zone. I'm not sure how the latest patch could have affected that but you may want to keep an eye out for it as you're basing your update off this version.
As always thanks and keep up the great work
Necro