I had this happen, but soon after reinstalling everything, it worked correctly.
Now im having a simple problem, with my internet stopping, and wont restart until i reload my computer. It has only started happing after this new downloader thing started.
Im blaming that.
If you load up wow, and turn off the downloader completely maybe that will help you. Instructions on how to do so, is beyond me. I would check for you, but im at work currently and cant.
Sorry.