What steps will reproduce the problem?
1. Unfortunately, I don't know specifically what causes it. Noticed "Action blocked" messages in my chat log. Turned on taintLog, and WoW is pointing the finger at Prospect
2.
3.

What is the expected output? What do you see instead?

What version of the product are you using?
v201012151811

Do you have an error log of what happened?
Taint log below

Please provide any additional information below.

The only other addons I have installed are GupPet and Buffet

12/17 14:30:55.128  Execution tainted by Prospect while reading updateContainerFrameAnchors - Interface\FrameXML\UIParent.lua:1849 <unnamed>:UIParentManageFramePositions()
12/17 14:30:55.128      Interface\FrameXML\UIParent.lua:1207
12/17 14:30:55.128      <unnamed>:SetAttribute()
12/17 14:30:55.128      Interface\FrameXML\UIParent.lua:1855 UIParent_ManageFramePositions()
12/17 14:30:55.128      Interface\FrameXML\TargetFrame.lua:165 OnEvent()
12/17 14:30:55.128      Interface\FrameXML\UnitFrame.lua:416
12/17 14:30:55.128  An action was blocked in combat because of taint from Prospect - MultiBarBottomLeftButton12ProspectOverlay:Hide()
12/17 14:30:55.128      Interface\AddOns\Prospect\Prospect.lua:385
12/17 14:30:58.768  An action was blocked in combat because of taint from Prospect - MultiBarBottomLeftButton12ProspectOverlay:Hide()
12/17 14:30:58.768      Interface\AddOns\Prospect\Prospect.lua:385
12/17 14:54:11.090  An action was blocked in combat because of taint from Prospect - MultiBarBottomLeftButton12ProspectOverlay:Hide()
12/17 14:54:11.090      Interface\AddOns\Prospect\Prospect.lua:385
12/17 14:56:15.676  An action was blocked in combat because of taint from Prospect - LootButton1ProspectOverlay:Hide()
12/17 14:56:15.676      Interface\AddOns\Prospect\Prospect.lua:385
12/17 14:56:19.480  An action was blocked in combat because of taint from Prospect - GroupLootFrame1IconFrameProspectOverlay:Hide()
12/17 14:56:19.480      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:04.454  An action was blocked in combat because of taint from Prospect - ContainerFrame4Item12ProspectOverlay:Hide()
12/17 15:22:04.454      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:04.569  An action was blocked in combat because of taint from Prospect - ContainerFrame4Item7ProspectOverlay:Hide()
12/17 15:22:04.569      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:04.588  An action was blocked in combat because of taint from Prospect - ContainerFrame4Item3ProspectOverlay:Hide()
12/17 15:22:04.588      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:04.635  An action was blocked in combat because of taint from Prospect - ContainerFrame3Item17ProspectOverlay:Hide()
12/17 15:22:04.635      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:04.700  An action was blocked in combat because of taint from Prospect - ContainerFrame1Item16ProspectOverlay:Hide()
12/17 15:22:04.700      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:04.719  An action was blocked in combat because of taint from Prospect - ContainerFrame1Item11ProspectOverlay:Hide()
12/17 15:22:04.719      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:04.920  An action was blocked in combat because of taint from Prospect - ContainerFrame1Item6ProspectOverlay:Hide()
12/17 15:22:04.920      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:04.955  An action was blocked in combat because of taint from Prospect - ContainerFrame1Item7ProspectOverlay:Hide()
12/17 15:22:04.955      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:04.969  An action was blocked in combat because of taint from Prospect - ContainerFrame1Item11ProspectOverlay:Hide()
12/17 15:22:04.969      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:05.421  An action was blocked in combat because of taint from Prospect - ContainerFrame1Item12ProspectOverlay:Hide()
12/17 15:22:05.421      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:07.692  An action was blocked in combat because of taint from Prospect - ContainerFrame3Item9ProspectOverlay:Hide()
12/17 15:22:07.692      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:07.744  An action was blocked in combat because of taint from Prospect - ContainerFrame3Item14ProspectOverlay:Hide()
12/17 15:22:07.744      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:22:07.786  An action was blocked in combat because of taint from Prospect - ContainerFrame3PortraitButtonProspectOverlay:Hide()
12/17 15:22:07.786      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:32:22.077  An action was blocked in combat because of taint from Prospect - CharacterBag2SlotProspectOverlay:Hide()
12/17 15:32:22.077      Interface\AddOns\Prospect\Prospect.lua:385
12/17 15:40:42.133  An action was blocked in combat because of taint from Prospect - CharacterBag2SlotProspectOverlay:Hide()
12/17 15:40:42.133      Interface\AddOns\Prospect\Prospect.lua:385