I still dont see the point of a "pre-T12-hardmode" best in slot list.
There is probably no raidgroup/guild in the whole world of worldcraft which on the one hand can (and actually DOES) kill Sinestra on a regular basis but on the other hand doesnt do any T12 bosses on heroic difficult. And even if there is one, it would be highly unlikey that a DPS DK gets the best T11-content tank necklace.
So while this list is probably "technically correct" it should be changend to a generic "pre-hardmode" best in slot list to actually be usefull for people.
Had the same issue. Problem for me was it could no longer automatically read my talent spec when loading my mage from Battle.net any more, so I had to manually input the spec. After that it worked fine again.