Eval error caused by Replacing Thing

[Fox Lee]

Hi folks,

I was trying to fix an issue with the Hybrid Avenger (it fails to grant the cut-down version of Oath of Enmity that it ought to give) and ran into an odd quirk. In a fresh user file in the editor, I copied the Hybrid Avenger class and set the new version to replace the existing one. Without changing anything yet, I activated the new version of the class in HeroLab and found that when the class is given to a character, I get the error:

Invalid tag expression specified for 'findchild'
Location: 'evalrule' script for Component 'Class' (eval rule '#2') near line 15

I tried to check this out in the data files, but line 15 of the file thing_validate.dat is an empty line, so clearly it's deeper than that.

The error is clearly tied to the replacement class - it's fine as soon as I change classes, remove the user file and reload, remove the replacement class from the user file and reload, and so forth.

Any advice on what might be causing this? Thanks!