WoWInterface - BugSack errors and "What mod is this"?

Here's a list of recent Bug Sack errors I need to get taken care of:

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[2008/03/08 11:06:37-170-x1]:
FuBar_GarbageFu\GarbageFu.lua:6: Cannot find a library instance of LibPeriodicTable-3.1.
Ace2\AceLibrary\AceLibrary.lua:490: in function `AceLibrary'
FuBar_GarbageFu\GarbageFu.lua:6: in main chunk

[2008/03/08 11:06:42-170-x1]: Mendeleev\Mendeleev.lua:2: Cannot find a library instance of "LibPeriodicTable-3.1".
!Swatter\Libs\SlideBar\SlideMain.lua:63: in function `LibStub'
Mendeleev\Mendeleev.lua:2: in main chunk

[2008/03/08 11:06:42-170-x1]: Mendeleev\Sets.lua:1: Cannot find a library instance of "LibBabble-Boss-3.0".
!Swatter\Libs\SlideBar\SlideMain.lua:63: in function `LibStub'
Mendeleev\Sets.lua:1: in main chunk

[2008/03/08 11:06:42-170-x1]: Mendeleev\Set_Instances_1-40.lua:1: Cannot find a library instance of "LibBabble-Boss-3.0".
!Swatter\Libs\SlideBar\SlideMain.lua:63: in function `LibStub'
Mendeleev\SLibStub'
Mendeleev\Set_Instances_1-40.lua:1: in main chunk

[2008/03/08 11:06:42-170-x1]: Mendeleev\Set_Instances_41-60.lua:1: Cannot find a library instance of "LibBabble-Boss-3.0".
!Swatter\Libs\SlideBar\SlideMain.lua:63: in function `LibStub'
Mendeleev\Set_Instances_41-60.lua:1: in main chunk

[2008/03/08 11:06:42-170-x1]: Mendeleev\Set_Instances_61-70.lua:1: Cannot find a library instance of "LibBabble-Boss-3.0".
!Swatter\Libs\SlideBar\SlideMain.lua:63: in function `LibStub'
Mendeleev\Set_Instances_61-70.lua:1: in main chunk

[2008/03/08 11:06:42-170-x1]: Mendeleev\SetsGear.lua:4: bad argument #1 to 'insert' (table expected, got nil)
Mendeleev\SetsGear.lua:4: in main chunk

[2008/03/08 11:06:45-170-x1]: Threat-1.0\Threat-1.0\ThreatNPCModuleCore.lua:25: Cannot find a library instance of "LibBabble-Boss-3.0".
!Swatter\Libs\SlideBar\SlideMain.lua:63: in function `LibStub'
Threat-1.0\Threat-1.0\ThreatNPCModuleCore.lua:25: in function `v'
Threat-1.0\Threat-1.0\Threat-1.0-Cleanup.lua:35: in main chunk

[2008/03/08 11:07:18-170-x1]: Cartographer_InstanceLoot\InstanceLoot.lua:4: Library "LibPeriodicTable-3.1" not found.
LibRock-1.0-3317 (LibRock-1.0):1667: in function `Rock'
Cartographer_InstanceLoot\InstanceLoot.lua:4: in main chunk
<in C code>: ?
<in C code>: ?
<in C code>: in function `pcall'
Cartographer-r62493\Cartographer.lua:959: in function
`LoadLoadOnDemandModules'
Cartographer-r62493\Cartographer.lua:472: in function <Interface\AddOns\Cartographer\Cartographer.lua:318>
<in C code>: ?
LibRock-1.0-3317 (LibRock-1.0):2472: in function <Interface\AddOns\LibRock-1.0\LibRock-1.0.lua:2447>
LibRock-1.0-3317 (LibRock-1.0):2521: in function <Interface\AddOns\LibRock-1.0\LibRock-1.0.lua:2514>
LibRock-1.0-3317 (LibRock-1.0):2594: in function <Interface\AddOns\LibRock-1.0\LibRock-1.0.lua:2557>
LibRock-1.0-3317 (LibRock-1.0):2715: in function <Interface\AddOns\LibRock-1.0\LibRock-1.0.lua:2710>
...:
Prat_AutoLoD\autolod.lua:37: in function <Interface\AddOns\Prat_AutoLoD\autolod.lua:35>
Prat_AutoLoD\autolod.lua:138: in function `Load'
Prat-2.0 63303.63188\Prat.lua:840: in function <Interface\AddOns\Prat\Prat.lua:830>
<in C code>: in function `pcall'
AceAddon-2.0-57245 (Ace2):24: in function <Interface\AddOns\Ace2\AceAddon-2.0\AceAddon-2.0.lua:23>
AceAddon-2.0-57245 (Ace2):998: in function `ManualEnable'
AceAddon-2.0-57245 (Ace2):926: in function <Interface\AddOns\Ace2\AceAddon-2.0\AceAddon-2.0.lua:919>
<in C code>: ?
AceEvent-2.0-56171 (Ace2):263: in function `TriggerEvent'
AceEvent-2.0-56171 (Ace2):914: in function <Interface\AddOns\Ace2\AceEvent-2.0\AceEvent-2.0.lua:907>

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And finally, anyone know what mod this is that causes the modifications? I thought it was STC (or SCT?) but I can't seem to either turn it off or modify it to disappear quicker, change it's position or make the font smaller. It covers too much of my screen and a lot of time I can't even see the mob.