Outlook email session problem in WD21 64-bit only (no replies)

I have the code below that works in 32-bit and not in 64-bit. I am using Outlook 2010. Has anyone else had this problem? Any solution?

Thanks,
Jeff

MySession..Name = ""
gwbSessionStarted is boolean = False
WHEN EXCEPTION IN
	IF NOT EmailStartSession(MySession) THEN
		Error("The Outlook session failed to open.","Check whether Microsoft Outlook is your default messaging.","The default messaging is selected in the default options of the Windows control panel.")
		Close()
	END
	gwbSessionStarted = True
DO
	gwsExcep is string = ExceptionInfo()
	Close()
END