I didn't delete my cookies. I deleted my old bookmark, searched for the RTF in google, got to the main forum page, logged in, and then saved the new page as a bookmark. I'm logged in when I click on the bookmark.
The old URL when logging in with throw an Invalid Redirect error which is because you're trying to log in through the old www.retrievertraining.net address. Just update your bookmark or favorite and you should be good to go.
Make sure your bookmark or favorite brings you to http://www.retrievertraining.net/forums and not to new.retrievertraining.net/forums. Notice the difference in the URL without using the "new" part now.
I cleared everything manually entered the site , logged in, than set it to my favorites I dont know if that makes a difference but so far its working make sure you click the remember me box I did all that before setting it to my fav/bookmark.