In reference to this previous thread...
I have a new cleric with a domain that allows the casting of "Invisibility". When cast, this spell cannot be dispelled with the command /c dispel invis.
I didn't have this problem previously with a cleric who had the Trickery domain. However, my new character IS experiencing it. Some notable differences: my new character has the Illusion domain, not Trickery, and also has the Elf domain, which gives her an additional character token. I don't know if these differences could possibly factor into the problem, but thought I'd mention them.