There are several of us on Deathwing who are unable to summon our ghouls. Yes, we have corpse dust or the glyph. I was able to summon it before, respecced, then respecced back to Unholy, then cleared AGAIN and specced it, and it says "spell not ready yet" each time I try to summon. This has been over a week. Can someone look into this bug?
Yeah it worked fine before respec - since I redid my talents, not at all. I suspect you haven't respecced since before this started happening.... it seems to be a new bug. There are several DK's in the DK forum experiencing the same issue. Whatever you do, don't respec until it's fixed!!! :)