Quote from oscarucb >>
RoleIcons is a tiny UI mod that adds Blizzard's party/raid role icons (tank/heal/dps) in several useful places in your UI, and provides several other related features.
Automatically sets your role based on your spec when joining a raid or respeccing
Finally, this addon not work in 9.0.1 any more :(
Tentative fix - Open up RoleIcons.lua and go to line 29, looks like this:
local maxlvl = MAX_PLAYER_LEVEL_TABLE[#MAX_PLAYER_LEVEL_TABLE]
Replace it with this:
local maxlvl = GetMaxLevelForLatestExpansion()