Gunther stands, bows to the Prinz and speaks:

Ah, ummm yes. . .well, your Highness, the Crusade isn't sanctioned by the Church due to our umm. . .status. So no other Catholic nations are taking part.

My lord has assured me, that if we are reconciled that he will seek an official Crusade as soon as our standing within the Church is high enough to do so. At that point, if it happens, we will have quite the head start over the other nations.