For those who know Lua and the WoW API that are reading over our shoulders, this error is being thrown during the "PLAYER_ENTERING_WORLD" event on this line of code...
local right = ChatFrameEditBox:GetRight() + 0;
For the record, I added the "+ 0" to
cause the error to be thrown to I could try and track down what's happening.
So... tell me... how is it possible that the ChatFrameEditBox has no left or right edge location when we're actually entering the world?
Foughlan -- can you do the following for me please? Press "Escape" to open the WoW options menu, select "Interface" the "Social" and look at the box for "Simple Chat" and "Lock Chat Settings" -- is either one checked?