LUA Error in combat: FrameXML, edit mode, "attempt to perform arithmetic on local"

[Sonata-eldrethalas]

Same error today on my beast master hunter doing Vesiphone’s Vicious Vesper (world quest) in Bastion. The quest adds an action button and the button, when activated, would move into the middle of my action bar and lock me out of the upper two action bars. Then I started getting the LUA editor error.

I’d guess it’s some issue with my pet bar (like the other classes’ bars mentioned above) interacting with the extra action button.

[Roseora-dalaran]

same issue its really annoying seems to happen most when attacking more then one target at a time, i hope bliz fix it soon

[Napayshni-hyjal (Napayshni)]

@Sonata-eldrethalas

I’d guess it’s some issue with my pet bar (like the other classes’ bars mentioned above) interacting with the extra action button.

Unfortunately that’s not it, at least it isn’t for me. It just happens on all characters in combat, regardless of class, if they have a pet or not, and at least for me never with an extra action button.