I started up a new game in WH2 as the White Dwarf and after playing for a while I wanted a different runesmith then was in the pool and I tried

agent runesmith wh_main_dwf_runesmith

which should be correct if I'm reading the tables right. And...nothing. I tried summoning other agents like a Loremaster and it works fine. Did the agent type or subtype for dwarven heros get changed?