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Unable to deploy the Microsoft.Practices.SharePoint.Common.LoggerProxy


I downloaded the SharePoint Guidance Library. I can build the solution and deploy the ConfigurationProxy service without a problem. But I get the following error when I attempt to deploy the LoggingProxy:
"Error occurred in deployment step 'Add Solution': Could not load file or assembly 'Microsoft.Practices.ServiceLocation, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified."
Is there a way to determine what dependency is missing?
Thank you in advanced for your help.