Black Morrigan Beast 6L

So I need some help. I heard through the grape vine Black Morrigan was bugged. Wasn't sure how he was bugged so I got some scarabs and 6L'd The Ivory Tower armor. Well now my entire build is unusable as I cannot use my main skill. Wanted to see if anyone knew if it was being fixed or if it is a different bug?

The Black Morrigan bug didn't allow it to be used in the altar. The game just didn't recognize the beast. It's been since fixed.

Something else is causing your main skill to be unusable. I would wager it's the final support you added. Some supports can only be used with certain weapons. If you socket them without that weapon, they make the main skill unusable.

Something like Close Combat, for example, can only be used with axes or swords.