I am using refactor 18.104.22.168 against sql server express 2008 r2 version:
Microsoft SQL Server 2008 R2 (RTM) - 10.50.1600.1 (Intel X86) Apr 2 2010 15:53:02 Copyright (c) Microsoft Corporation Express Edition with Advanced Services on Windows NT 5.1 <X86> (Build 2600: Service Pack 3)
When I use the smart rename function to rename a column of a table, it generates the changes. However, I have found that if that column is in a stored procedure and it is wrapped in  for example "[columnnametochange]" then the stored procedure is not updated. It updated the views and everything else, however the stored procedure in question was not listed and the update was missing.