Duplicating UI question

I have 2 wow folders, 1 for my driver, and the other 1 is for the 4 slaves.

For whatever reason I've managed to have 3 of them be fine, and the 4th gets a LUA error - they're using the same WOW folder, same addons, everything, but there must be 1 setting on the 4th that's causing a problem.

Question is - is there any folder or select files I can copy from 1 acct subfolder to another that will duplicate local UI settings?

Is would duplicating the WTF\%accountname%\server\toon folder do it?

Bump - Noone?