Fix a bug in important nodes introduced during refactoring

Hello @kylehardgrave, 

Please review the following commits I made in branch 'nick-bugs'.

75a23bacb4f9fe8565767b82488488c398283205 (2013-07-23 15:49:24 -0400)
Fix a bug in important nodes introduced during refactoring


R=@kylehardgrave