try this script: http://www.scriptspot.com/3ds-max/scripts/detriangulator hoefully it will clean your mesh to the extent that you can select the edgeloop
The Noor’s script (the newest of the ones you listed) installs the tool, it doesn’t run it. From the link you provided: Script will be found in the customize UI under category "Noors"
im still working on the script to be easier to use.. i will post a video and the script once its more complete. Its actually kinda fun to export to UDK for once. :)
For anyone that might be having this issue in the future - After trying out endless amounts of scripts - This one worked for me. http://www.scriptspot.com/3ds-max/scripts/ani-baked