What steps will reproduce the problem?
1. Enter AGUF setup
2. Uncheck (remove tick) from the XP and REP bars.

What is the expected output? What do you see instead?
I expect the bars to be removed without hassle. Instead I get the same script error over and over again.

What version of the product are you using?
r679

Do you have an error log of what happened?
...\addons\ag_Extras\modules\xprepbar\xprepbar.lua:246 attempt to index field 'XPBar' (a nil value)

Please provide any additional information below.