Error on Login about wow5box HOT 6 CLOSED

I have also tried disabling all other addons except MultiboxRoster and 
Multitool 
with the same results.

Can you attach your teams.lua file?

Try this:

local MBR = LibStub("AceAddon-3.0"):GetAddon("MultiboxRoster")

MBR.teams = {
    rightball = { "drwatson", "brothercain", "alma" },
    leftball = { "drwatson", "holybynature", "bubbletown" }
}

(No quotes areound the team names.)

Thank you, it now loads without error.

Great! Glad it's working for you.