Sending email from OneNote 2010 using Outlook 2010 fails with error "Microsoft Outlook is not properly installed or has not been started for the first time. You can install or repair Outlook , or set a different default e-mail program and then try again."

I've upgraded my existing Office 2007 Enterprise install to Office 2010 Professional (32-bit) running on Windows 7 Enterprise. 

When I'm attempting to email a OneNote page (page selected and hit "CTRL+SHIFT+E" I get the error message:

"Microsoft Outlook is not properly installed or has not been started for the first time. You can install or repair Outlook , or set a different default e-mail program and then try again."

I've tried repairing the Office installation, and I have also set Outlook to be defaulted for all file types under the Default Applications area. 

Any suggestions would be greatly appreciated.  Thanks!