Removing the outlook social network connector and the onenote outlook plugin fixed this issue for me. I can now clip from Outlook. Not sure which one was interfering, but I would guess Onenote as Onenote tends to break evernote screen clipping if it is running. (You're probably wondering why I have both...onenote is built-in to sharepoint and would rather use the native app than the web version when I have to use it).
Wildsubnet replied to nefianna's question in Evernote for Windows Requests (Versions 6.25.1 and under)Well I'll chime in as well. This feature definitely needs to be added. The lack of it actually keeps me from recommending Evernote to people. Seriously.