need someone whos good with add ons

So I DC at the most random times on all my toons either its talking to a prof trainer or relesing spirit. THis is the LUA error i usually get
Date: 2010-02-08 23:22:52
ID: 2
Error occured in: Global
Count: 1
Message: ..\AddOns\Grid\GridFrame.lua line 391:
Usage: <unnamed>:SetFont("font", fontHeight [, flags])
Debug:
(tail call): ?
(tail call): ?
[C]: SetFont()
Grid\GridFrame.lua:391: SetFrameFont()
Grid\GridFrame.lua:1130: func()
Grid\GridFrame.lua:1163: WithAllFrames()
Grid\GridFrame.lua:1130: ?()
...non\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:147:
...non\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:147
[string "safecall Dispatcher[3]"]:4:
[string "safecall Dispatcher[3]"]:4
[C]: ?
[string "safecall Dispatcher[3]"]:13: ?()
...non\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:92: Fire()
...gWigs\Libs\LibSharedMedia-3.0\LibSharedMedia-3.0.lua:176: Register()
DXE\Media.lua:102: in main chunk
[C]: LoadAddOn()
DXE_Loader\Loader.lua:19: Load()
DXE_Loader\Loader.lua:39: ?()
DXE_Loader\Loader.lua:137:
DXE_Loader\Loader.lua:137
AddOns:
Swatter, v5.7.4568 (KillerKoala)
WowheadLooter, v30300
Ace2, v
ACP, v3.2.0.26
Babylonian, v5.1.DEV.130
Bagnon, v2.12.3
BagnonForever, v1.1.2
BagnonTooltips, v
Bartender4, v4.4.2
BeanCounter, v5.7.4568 (KillerKoala)
BigWigs, v3.181
BigWigsCitadel, v
BigWigsCore, v
BigWigsPlugins, v
BonusScanner, v5.2
BrokerBonusScanner, v1.2
Configator, v5.1.DEV.130
DebugLib, v5.1.DEV.130
Decursive, v2.4.3.2
DXE, v
DXECitadel, v
DXELoader, v
epgp, v5.5.14
epgplootmaster, v0.4.9
epgplootmasterml, v0.4.9
Fatality, v1.1.2
ForteCasting, v
ForteCooldown, v
ForteCore, v1.958
ForteDeathKnight, v
ForteDruid, v
ForteHealthstone, v
ForteHunter, v
ForteMage, v
FortePaladin, v
FortePriest, v
ForteRogue, v
ForteShaman, v
ForteShard, v
ForteSoulstone, v
ForteSummon, v
ForteTalent, v
ForteTimer, v
ForteVehicle, v
ForteWarlock, v
ForteWarrior, v
Gatherer, v3.1.14
Grid, v1.30100.2009041601
Informant, v5.7.4568 (KillerKoala)
InterruptSay, v3.3.3
kgPanels, vv1.36
Omen, v3.0.7
Parrot, vv1.10.12
Postal, v3.3.0
PowerAuras, v2.6.3N
Prat30, v3.3.2
Prat30HighCPUUsageModules, v
Prat30Libraries, v
Quartz, v1.0
QuartzFlight, v1.0
QuartzFocus, v1.0
QuartzInterrupt, v1.0
QuartzLatency, v1.0
QuartzMirror, v1.0
QuartzPet, v1.0
QuartzPlayer, v1.0
QuartzRange, v1.0
QuartzTarget, v1.0
QuartzTradeskill, v1.0
Recount, v
SatrinaBuffFrame, v3.1
SayDeathboundWard, v2010-01-01
Scorchio2, v
SlideBar, v5.7.4568 (KillerKoala)
Spellcraft, v
Stubby, v5.7.4568 (KillerKoala)
TankPoints, v
TidyPlates, v5.7.11
TidyPlatesCleanPlates, v1.9g
TipTac, v09.11.28
TipTacItemRef, v09.08.13
TipTacTalents, v09.08.13
XLoot, v0.91.1
XLootGroup, v0.61
XLootMaster, v0.81
XPerl, v3.0.8
XPerlArcaneBar, v
XPerlCustomHighlight, v
XPerlParty, v
XPerlPartyPet, v
XPerlPlayer, v
XPerlPlayerBuffs, v
XPerlPlayerPet, v
XPerlRaidAdmin, v
XPerlRaidFrames, v
XPerlRaidHelper, v
XPerlRaidMonitor, v
XPerlRaidPets, v
XPerlTarget, v
XPerlTargetTarget, v
BlizRuntimeLib_enUS v3.3.2.30300 <us>
(ck=850)

Any idea what i can to stop it? D:

Somethings wrong with Grid. Either I suck at reading wow error messages or something is missing from the message. Not really sure what exactly failed.

you tried to change the font in grid and that didn't work