RESOLVED AT LAST!
After some careful studying of the code I realized that there was a missing field in the database. The current PEQ db for download is from Revision1751, which is missing sql_updates/1793_resist_adjust.sql
The following fixed spells for me:
Code:
ALTER TABLE `npc_spells_entries` ADD `resist_adjust` INT NULL AFTER `priority`;
Now if only my mobs didn't chain buff their pets. . .