when loading the attached character ("Caelin - Instant summons.pcg"), I get a stickup "Could not find spell Instant Summons in Domain Rune" (Capture.jpg)
Loading anyway ... then examine the spell list, and lo! Instant Summons is back in the known spells list. Should be , as it's a standard in the Core book for the Rune Domain, despite being a Sor/Wiz spell normally.
If I keep the character features and load only Core, Bestiary, APG, UM, UC and ARG, then it loads without problem.
If I strip it down ("Caelin - Instant summons2.pcg"), load only Core book + Bestiary, and change race to Human, the problem goes away.
The problem seems to be with the multi-set, which alas is the best default these days!
pathfinder core supplements multi-set