WowAce

I get the following error when using CompactRaid:

Message: Interface\AddOns\DirectionArrow\DirectionArrow-v5.4.0.002.lua:290: bad argument #1 to 'match' (string expected, got nil)
Time: Thu Feb 13 20:28:53 2014
Count: 57
Stack: Interface\AddOns\DirectionArrow\DirectionArrow.lua:290: in function `?'
Interface\AddOns\DirectionArrow\DirectionArrow.lua:167: in function <Interface\AddOns\DirectionArrow\DirectionArrow.lua:167>

Locals: self = <table> {
SetDefaultModuleLibraries = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:398
Enable = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:325
RegisterChatCommand = <function> defined @Interface\AddOns\DataStore\libs\AceConsole-3.0\AceConsole-3.0.lua:85
EnableModule = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:363
modules = <table> {
}
GetModule = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:241
IterateEmbeds = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:473
defaultModuleLibraries = <table> {
}
CheckUnit = <function> defined @Interface\AddOns\DirectionArrow\DirectionArrow.lua:315
UnregisterChatCommand = <function> defined @Interface\AddOns\DataStore\libs\AceConsole-3.0\AceConsole-3.0.lua:111
Printf = <function> defined @Interface\AddOns\DataStore\libs\AceConsole-3.0\AceConsole-3.0.lua:69
t = OVERLAY {
}
SetDefaultModulePrototype = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:440
x = <unnamed> {
}
name = "DirectionArrow"
IsEnabled = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:482
orderedModules = <table> {
}
DisableModule = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:381
RegisterMessage = <function> defined @Interface\AddOns\DataStore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:118
GetArgs = <function> defined @Interface\AddOns\DataStore\libs\AceConsole-3.0\AceConsole-3.0.lua:144
Print = <function> defined @Interface\AddOns\DataStore\libs\AceConsole-3.0\AceConsole-3.0.lua:54
optionsFrames = <table> {
}
GROUP_ROSTER_UPDATE = <function> defined @Interface\AddOns\DirectionArrow\DirectionArrow.lua:179
f = <unnamed> {
}
defaultModuleState = true
IsModule = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:499
db = <table> {
}
SetDefaultModuleState = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:418
baseName = "DirectionArrow"
UnregisterMessage = <function> defined @Interface\AddOns\DataStore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:181
SetEnabledState = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:455
UPDATE_MOUSEOVER_UNIT = <function> defined @Interface\AddOns\DirectionArrow\DirectionArrow.lua:332
enabledState = true
ToggleSticky = <function> defined @Interface\AddOns\DirectionArrow\DirectionArrow.lua:308
RegisterEvent = <function> defined @Interface\AddOns\DataStore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:118
UnregisterAllMessages = <function> defined @Interface\AddOns\DataStore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:202
OnInitialize = <function> defined @Interface\AddOns\DirectionArrow\DirectionArrow.lua:115
UnregisterAllEvents = <function> defined @Interface\AddOns\DataStore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:202
SendMessage = <function> defined @Interface\AddOns\DataStore\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:87
IterateModules = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:468
SetArrow = <function> defined @Interface\AddOns\DirectionArrow\DirectionArrow.lua:365
NewModule = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:266
GetName = <function> defined @Interface\AddOns\DataStore\libs\AceAddon-3.0\AceAddon-3.0.lua:310
sticky = false
UnregisterEvent = <function> defin