Plug-in assembly does not contain the required types or assembly content cannot be updated – Dynamics CRM 2011

Uma dica rápida para os que se depararam com o erro informado no título deste post: Plug-in assembly does not contain the required types or assembly content cannot be updated. Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: Plug-in assembly does not contain the required types or assembly content cannot be updated. Detail: -2147204725 Plug-in assembly [...]

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