Sql Schema Compare will not update after CLR object installed 'Source schema drift detected'

Question

After installing a custom CLR object Sql Server Developer Tools (SSDT) VS2012 will not allow an update. The error is \"Source schema drift detected. Press Compare to refresh.

Answer 1

This sort of loop can also be caused by a referenced SSDT project failing to build. The referenced project may be missing, unloaded, or have an error which prevents the compare from completing.