If you install Visual Studio 2010 before installing the Dynamics SL 2011 client, the SL client install copies the CodeInspector.Addin file from its default location of C:\Program Files (x86)\Common Files\microsoft shared\DynamicsSL to My Documents\Visual Studio 2010\Addins and changes the Version XML element from 8.0 to 10.0.
If you install Visual Studio 2013 and want to use the CodeInspector, you’ll need to copy this file to My Documents\Visual Studio\Addins (creating the Addins folder if Visual Studio hasn’t already created it). You also need to copy CodeInspector.dll from the default location to the same folder. Open CodeInspector.Addin and make sure the Version XML elements looks like this <Version>12.0</Version>. Now when you select the Add-in Manager under VS2013’s Tools menu, you’ll see CodeInspector for Dynamics SL. Check the boxes under Available Add-ins and Startup, click OK, then restart VS2013 and you’ll see CodeInspector at the top of the Tools menu.