I wanted to add that I just booked a seat using 40,000 of my Aviator miles to Paris next April on TWA with no problem, whatsoever.
I think the key to booking any award travel, though especially on TWA, is doing it as far ahead as humanly possible.
Call me crazy, but I love free tickets to Europe!
http://www.flyertalk.com/forum/biggrin.gif
Cheers.