LOTRO to relaunch as free to play?

All this talk of free quest, made me want to play again. reinstalled the client but for some reason, I can’t see the 64 bit version of the client in the options. I only see the 32bit choice. I do have a 64bit windows.

Their forum is very useless to help me. I want to enjoy twice the bites!
Any one had that problem before?