Sorry, but forget everything I said about the spellcraft check when summoning. I thought something was up after the conversation regarding the natural 1. I had just gone with it, but it's something else that's the exception to the rule, that you guys may or may not come across much, much later. I just looked over my notes but I doubt it'll change anything for Melkior other than being a lot closer to a near fail.
It's NOT a spellcraft check. It's a caster level check. You have to beat caster level DC 30 for summoning spells to function. Unless you're using Gate, in which case it's 40 (which I had changed from "automatically negated"). So it's CL+1d20. My apologies. We'd been on hiatus for a while so I'd forgotten a chunk of it, but still had a bit of residual left. Apparently I blended them together.
Also, I ended up catching the flu so I didn't go to the funeral yesterday. Quite unfortunate.