When investigating stack traces that come from a production version, no file names and line numbers are present. Example: System.InvalidCastException: Unable to cast object of type 'System.DBNull' to type 'System.String'. at Fortis.ASR.EOS.Acquisitie.UI.IntermediairConfiguratie.AanvraagImplementatie.HaalUitDataSetIntermediairGegevens(DataSet dataSet, IntermediairGegevens result) at Fortis.ASR.EOS.Acquisitie.UI.IntermediairConfiguratie.AanvraagImplementatie.GeefIntermediairGegevens(Int32 agentnummer) The result is that no links are available to step trough the methods in the stack trace. However, it looks to me that R# still has enough information to know what method is being called and thus still can display a link to it. If the next method in the stack trace is called multiple times from within the same method (or from within an inlined (optimised) method), R# may not know the exact line, but being able to jump just to the start of the method would already be a great improvement.