WowAce

Addon gives errors in the new patch 9.1.5.

Not a coder myself, but i maybe have a temp fix for the errors:

1) open bulkmailinbox.lua

2) scroll to line 812 and change local backdrop = GameTooltip:GetBackdrop()" to "--local backdrop = GameTooltip:GetBackdrop()

3) scroll to line 816 and change toolbar:SetBackdrop(backdrop) to  -- toolbar:SetBackdrop(backdrop)

4) insert a new line below 817

5) copy this after the new line:

    local GenericBackdrop = {
    bgFile = "Interface\Tooltips\UI-Tooltip-Background"
    }
    toolbar:SetBackdrop(GenericBackdrop)
    toolbar:SetBackdropColor(0.06, 0.06, 0.06, 1.0)
    toolbar:SetBackdropBorderColor(0.15, 0.15, 0.15, 1.0)

6) save

The adjusted code from line 812 on should now look like this:

--local backdrop = GameTooltip:GetBackdrop()

--toolbar:SetBackdrop(backdrop)

local GenericBackdrop = {
bgFile = "Interface\Tooltips\UI-Tooltip-Background"
}
toolbar:SetBackdrop(GenericBackdrop)
toolbar:SetBackdropColor(0.06, 0.06, 0.06, 1.0)
toolbar:SetBackdropBorderColor(0.15, 0.15, 0.15, 1.0)