Need help with an error.

[Angrysteel]

12x <event>ADDON_ACTION_BLOCKED:AddOn 'Mapster' tried to call the protected function 'CompactRaidFrame1:SetPoint()'.
<in C code>: in function `SetPoint'
Interface\FrameXML\FlowContainer.lua:151: in function `FlowContainer_DoLayout':
Interface\FrameXML\FlowContainer.lua:17: in function `FlowContainer_ResumeUpdates':
...actRaidFrames\Blizzard_CompactRaidFrameContainer.lua:186: in function `CompactRaidFrameContainer_LayoutFrames':
...actRaidFrames\Blizzard_CompactRaidFrameContainer.lua:131: in function `CompactRaidFrameContainer_TryUpdate':
...actRaidFrames\Blizzard_CompactRaidFrameContainer.lua:58: in function `CompactRaidFrameContainer_OnEvent':
<string>:"*:OnEvent":1: in function <[string "*:OnEvent"]:1>

nil

Locals:
nil

and

12x <event>ADDON_ACTION_BLOCKED:AddOn 'Mapster' tried to call the protected function 'CompactRaidFrame2:ClearAllPoints()'.
<in C code>: in function `ClearAllPoints'
Interface\FrameXML\FlowContainer.lua:147: in function `FlowContainer_DoLayout':
Interface\FrameXML\FlowContainer.lua:17: in function `FlowContainer_ResumeUpdates':
...actRaidFrames\Blizzard_CompactRaidFrameContainer.lua:186: in function `CompactRaidFrameContainer_LayoutFrames':
...actRaidFrames\Blizzard_CompactRaidFrameContainer.lua:131: in function `CompactRaidFrameContainer_TryUpdate':
...actRaidFrames\Blizzard_CompactRaidFrameContainer.lua:58: in function `CompactRaidFrameContainer_OnEvent':
<string>:"*:OnEvent":1: in function <[string "*:OnEvent"]:1>

nil

Locals:
nil

I thought this was a Mapster error, but when disabling Mapster, this same error shows up for Lose Control. Disable Lose Control and the same error shows up for Ace 3. Etc etc. I keep disabling addons, but it just seems to randomly pick a different addon and spit this error out.

Any ideas what causing this? Its hard to track down because it only happens in raids, so disabling one addon at a time, or enabling one addon at a time between pulls isnt easy.