I understand that many people are having trouble logging in after today's patch, u33.0.5. Many others who are able to log in have found that many of their settings are not as they remember. And some of those folks can't remember what their settings were in order to put them back as they like them. This is happening only to those people who were running the 64-bit client before today's u33.0.5 patch.
Fortunately, there is an easy fix for this:
1- Be sure LOTRO is not running, neither the LOTRO launcher application nor one of the LOTRO clients.
2- Go to ~/Documents/The Lord of the Rings Online (My Documents\The Lord of the Rings Online if you're on a PC) and look for the following two files:
UserPreferences.ini
UserPreferences64.ini.bak
3- Open both of those files with your favorite text editor.
4- In UserPreferences.ini, DELETE everything except the sections headed by [Launcher] and [User_X].
5- In UserPreferences64.ini.bak, COPY everything. Note that UserPreferences64.ini.bak should not include sections headed by [Launcher] or [User_X]. If your UserPreferences64.ini.bak does include those sections, do not include those sections in your COPY action.
6- In UserPreferences.ini, PASTE everything you just copied. Paste it below the existing [Launcher] and [User_X] sections.
7- SAVE your changes to UserPreferences.ini then QUIT out of your text editor.
You can now run the LOTRO launcher application and when you get back to the game you should see all your settings as you left them yesterday.
I am posting this in LOTRO General Discussion & Feedback, PC Technical Support, and Mac Technical Support.