raid frames menu problem

[lynce]

Keep getting this fun little error when right clicking on raid frames:

11x FrameXML\UnitPopup.lua:940: Usage: GetRaidRosterInfo(index)
<in C code>
FrameXML\UnitPopup.lua:940: in function "UnitPopup_HideButtons"
FrameXML\UnitPopup.lua:267: in function "UnitPopup_ShowMenu"
FrameXML\SecureTemplates.lua:239: in function "initFunction"
FrameXML\UIDropDownMenu.lua:69: in function "UIDropDownMenu_Initialize"
FrameXML\UIDropDownMenu.lua:864: in function "ToggleDropDownMenu"
FrameXML\SecureTemplates.lua:310: in function "handler"
FrameXML\SecureTemplates.lua:632: in function "SecureActionButton_OnClick"
FrameXML\SecureTemplates.lua:672: in function <FrameXML\SecureTemplates.lua:664>

Locals:
dropdownMenu = SecureTemplatesDropdown {
0 = <userdata>
displayMode = "MENU"
openedFor = oUF_Raid25UnitButton1 {}
initialize = <func> @FrameXML\SecureTemplates.lua:196
server = "Frostmane"
name = "Drúedain"
which = "RAID"
unit = "raid2"
}
inInstance = 1
instanceType = "raid"
inParty = 1
inRaid = 1
isLeader = 0
isAssistant = 0
inBattleground = 0
canCoop = 1
haveBattleTag = true
(for generator) = <func> =[C]:-1
(for state) = <table> {
1 = "SET_FOCUS"
2 = "MUTE"
3 = "UNMUTE"
4 = "RAID_SILENCE"
5 = "RAID_UNSILENCE"
6 = "BATTLEGROUND_SILENCE"
7 = "BATTLEGROUND_UNSILENCE"
8 = "RAID_LEADER"
9 = "RAID_PROMOTE"
10 = "RAID_MAINTANK"
11 = "RAID_MAINASSIST"
12 = "LOOT_PROMOTE"
13 = "RAID_DEMOTE"
14 = "VOTE_TO_KICK"
15 = "RAID_REMOVE"
16 = "PVP_REPORT_AFK"
17 = "MOVE_PLAYER_FRAME"
18 = "MOVE_TARGET_FRAME"
19 = "REPORT_PLAYER"
20 = "CANCEL"
}
(for control) = 10
index = 10
value = "RAID_MAINTANK"

I have no idea what it means.