audio data not sent to 3rd party program via UTILITIES menu

Using the standard method  http://www.cakewalk.com/Support/kb/reader.aspx/2007013099 to put RX2 in the UTILITIES drop down menu, I can get iZotope RX2 to open but the selected audio file is NOT sent to RX2 like it used to.  And I don't get the preliminary dialog box like I use to.  It would work fine for me Win7-32 with Sonar X1-32, but since I upgrade to WIN7-64 and Sonar X1c-64 no go.
 
Any ideas?