Error in Adding Spells to Monsters?

[Kendall-DM]

I keep getting this error whenever I'm adding a spell to a monster that can cast spells as a class. For example, a Solar can cast spells as a cleric of 20th level. However, when adding spells for this, I get the following error upon opening the spell selection pop-up.

"Syntax error in dynamic 'candidate' tag expression"

Is this just me? I can't seem to figure this one out at the moment, though I haven't tried all that hard to find out what is going on (the error doesn't stop me from doing what I want, it just pops up and I click OK). Can someone try this out for themselves? This issue started occurring last week when I was trying to clean up all the spells in my portfolios so that they were using the new spell with area/target information.

Thanks!