Microsoft Dynamics CRM 2011 Update Rollup 12 and the Microsoft Dynamics CRM December 2012 Service Update introduced new solution components that can be included as dependencies for exported solutions. These new dependencies can prevent the installation of a solution developed with Update Rollup 12 or later service update on earlier releases.
Microsoft has provided the Solution Down-level Utility.exe tool in the latest SDK to remove Post UR12 dependencies. Removing the same will allow installation of backward compatible managed or unmanaged solution from an organization with Update Rollup 12 or later service update. Continue reading