Internal error in Forbidden Patterns Policy

Microsoft Visual Studio

This override warning in VS occur when editing files

Internal error in Forbidden Patterns Policy.
Error Loading The Forbidden Patterns Policy policy (The policy assembly 'Microsoft.TeamFoundation.PowerTools.CheckinPolicies.ForbiddenPatternsPolicy, Version-10.0.0.0,
Culture=neutral, PublicKeyToken=b03f5fd23423' is not registered.). Installation instructions:

Error Loading The Forbidden Patterns Policy policy (The policy assembly 'Microsoft.TeamFoundation.PowerTools.CheckinPolicies.ForbiddenPatternsPolicy, Version-10.0.0.0,
Culture=neutral, PublicKeyToken=b03f5fd23423' is not registered.). Installation instructions:

To solve this please ensure you have the TFS Powertools extensions for Visual Studio installed.

Goto tools->extension manager and you should find it in the online section.

http://visualstudiogallery.msdn.microsoft.com/b1ef7eb2-e084-4cb8-9bc7-06c3bad9148f