Sorry for the long post, I also removed all the "addons" from the error messages, but I posted them at the bottom because they're all the same ones for each error message.

Date: 2012-07-25 00:43:09
ID: 1
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC\timer.lua line 35:
attempt to index local 'OmniCC' (a boolean value)
Debug:

OmniCC\timer.lua:35: in main chunk

Date: 2012-07-25 00:43:09
ID: 2
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC\aniUpdater.lua line 7:
attempt to index local 'OmniCC' (a boolean value)
Debug:

OmniCC\aniUpdater.lua:7: in main chunk

Date: 2012-07-25 00:43:09
ID: 3
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC\classicUpdater.lua line 7:
attempt to index local 'OmniCC' (a boolean value)
Debug:

OmniCC\classicUpdater.lua:7: in main chunk

Date: 2012-07-25 00:43:09
ID: 4
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC\effects\alert.lua line 40:
attempt to index global 'OmniCC' (a boolean value)
Debug:

OmniCC\effects\alert.lua:40: in main chunk

Date: 2012-07-25 00:43:09
ID: 5
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC\effects\activate.lua line 21:
attempt to index global 'OmniCC' (a boolean value)
Debug:

OmniCC\effects\activate.lua:21: in main chunk

Date: 2012-07-25 00:43:09
ID: 6
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC\effects\pulse.lua line 98:
attempt to index global 'OmniCC' (a boolean value)
Debug:

OmniCC\effects\pulse.lua:98: in main chunk

Date: 2012-07-25 00:43:09
ID: 7
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC\effects\shine.lua line 106:
attempt to index global 'OmniCC' (a boolean value)
Debug:

OmniCC\effects\shine.lua:106: in main chunk

And the Config panel errors

Date: 2012-07-25 00:45:25
ID: 8
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC_Config\mainPanel.lua line 112:
attempt to index global 'OmniCC' (a boolean value)
Debug:

OmniCC_Config\mainPanel.lua:112:
OmniCC_Config\mainPanel.lua:111
OmniCC_Config\mainPanel.lua:146: initFunction()
..\FrameXML\UIDropDownMenu.lua:69: UIDropDownMenu_Initialize()
OmniCC_Config\mainPanel.lua:143:
OmniCC_Config\mainPanel.lua:89
OmniCC_Config\mainPanel.lua:303: optionsPanel_Create()
OmniCC_Config\mainPanel.lua:363: in main chunk

OmniCC\OmniCC.lua:396: OnSlashCmd()
OmniCC\OmniCC.lua:57: ?()
..\FrameXML\ChatFrame.lua:4293:
..\FrameXML\ChatFrame.lua:4239

..\FrameXML\ChatFrame.lua:3992: ChatEdit_SendText()
..\FrameXML\ChatFrame.lua:4031: ChatEdit_OnEnterPressed()

  [string "*:OnEnterPressed"]:1

Date: 2012-07-25 00:45:25
ID: 9
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC_Config\panels\general.lua line 7:
attempt to index local 'OmniCC' (a boolean value)
Debug:

OmniCC_Config\panels\general.lua:7: in main chunk

OmniCC\OmniCC.lua:396: OnSlashCmd()
OmniCC\OmniCC.lua:57: ?()
..\FrameXML\ChatFrame.lua:4293:
..\FrameXML\ChatFrame.lua:4239

..\FrameXML\ChatFrame.lua:3992: ChatEdit_SendText()
..\FrameXML\ChatFrame.lua:4031: ChatEdit_OnEnterPressed()

  [string "*:OnEnterPressed"]:1

Date: 2012-07-25 00:45:25
ID: 10
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC_Config\panels\font.lua line 7:
attempt to index local 'OmniCC' (a boolean value)
Debug:

OmniCC_Config\panels\font.lua:7: in main chunk

OmniCC\OmniCC.lua:396: OnSlashCmd()
OmniCC\OmniCC.lua:57: ?()
..\FrameXML\ChatFrame.lua:4293:
..\FrameXML\ChatFrame.lua:4239

..\FrameXML\ChatFrame.lua:3992: ChatEdit_SendText()
..\FrameXML\ChatFrame.lua:4031: ChatEdit_OnEnterPressed()

  [string "*:OnEnterPressed"]:1

Date: 2012-07-25 00:45:25
ID: 11
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC_Config\panels\position.lua line 7:
attempt to index local 'OmniCC' (a boolean value)
Debug:

OmniCC_Config\panels\position.lua:7: in main chunk

OmniCC\OmniCC.lua:396: OnSlashCmd()
OmniCC\OmniCC.lua:57: ?()
..\FrameXML\ChatFrame.lua:4293:
..\FrameXML\ChatFrame.lua:4239

..\FrameXML\ChatFrame.lua:3992: ChatEdit_SendText()
..\FrameXML\ChatFrame.lua:4031: ChatEdit_OnEnterPressed()

  [string "*:OnEnterPressed"]:1

Date: 2012-07-25 00:45:25
ID: 12
Error occured in: Global
Count: 1
Message: ..\AddOns\OmniCC_Config\panels\rules.lua line 78:
attempt to call method 'AddTab' (a nil value)
Debug:

OmniCC_Config\panels\rules.lua:78: in main chunk

OmniCC\OmniCC.lua:396: OnSlashCmd()
OmniCC\OmniCC.lua:57: ?()
..\FrameXML\ChatFrame.lua:4293:
..\FrameXML\ChatFrame.lua:4239

..\FrameXML\ChatFrame.lua:3992: ChatEdit_SendText()
..\FrameXML\ChatFrame.lua:4031: ChatEdit_OnEnterPressed()

  [string "*:OnEnterPressed"]:1

And here the the addons I use =)

AddOns:
Swatter, v3.2.4 (<%codename%>)
Altoholic, v4.3.003
Archy, v1.8.24
Babylonian, v5.1.DEV.312(/embedded)
CloseUp, v4.3.001a
Configator, v5.1.DEV.312(/embedded)
CTCore, v4.0302
CTExpenseHistory, v4.0301
CTRaidAssist, v4.0301
CTRaidAssistMTPlayers, v4.0301
DataStore, v4.3.001
DataStoreAchievements, v4.3.001
DataStoreAgenda, v4.3.001
DataStoreAuctions, v4.3.001
DataStoreCharacters, v4.3.001
DataStoreContainers, v4.3.001
DataStoreCrafts, v4.3.001
DataStoreCurrencies, v4.3.001
DataStoreInventory, v4.3.001
DataStoreMails, v4.3.001
DataStorePets, v4.3.001
DataStoreQuests, v4.3.001
DataStoreReputations, v4.3.001
DataStoreSpells, v4.3.001
DataStoreStats, v4.3.001
DataStoreTalents, v4.3.001
DBMCore, v
DBMLDB, v
DBMSpellTimers, v
DBMVictorySound, v1.9
DSM, v2.3
FishingBuddy, v1.0.8b
Fizzle, vv1.5.4
FluidFrames, v2.4d
ForteCasting, v
ForteClass, v
ForteCooldown, v
ForteCore, v1.976.1
ForteTalent, v
ForteTimer, v
Gatherer, v3.2.4
GearScore, v4.11.00.00
GuildCheck, vv2.38
Loremaster, vv4.3.0.4
Mapster, v1.4.3
MikScrollingBattleText, v5.6.117
Omen, v3.1.6
OmniCC, v4.3.2
OmniCCConfig, v
Outfitter, v5.4.4
PallyPower, vv4.0.19
Portfolio, v1.23
Postal, v3.4.13
Prat30, vr885
Prat30Libraries, v
RatingBuster, v1.6.7
ReforgedTooltip, v1.0.6
Skada, v1.4-2
SkadaCC, v1.0
SkadaDamage, v1.0
SkadaDamageTaken, v1.0
SkadaDeaths, v1.0
SkadaDebuffs, v1.0
SkadaDispels, v1.0
SkadaEnemies, v1.0
SkadaHealing, v1.0
SkadaPower, v1.0
SkadaThreat, v1.0
Skillet, v
SlideBar, v3.2.4 (<%codename%>)
TipTac, v12.05.20
TipTacItemRef, v12.05.20
Tukui, v14.31
TukuiConfigUI, v
TukuiDBM, v
TukuiRaid, v
TukuiSpechelper, v1.3
WhisperWhisper, v2.5
BlizRuntimeLib_enUS v4.3.4.40300
(ck=71d)

It appears to me you have tullaCC enabled. Either disable tullaCC or OmniCC and the problem will go away.

@Tuller, I'm receiving a hell lot of reports regarding users using both tullaCC and OmniCC. Could you please change tullaCC to disable itself or display a more informative dialog or error message when OmniCC is enabled? Setting a boolean flag to true is just not enough. In this case, it just means more confusion by the users and more work for us both.