To everyone:
If you are wanting to play both the legacy game and the new one there is something you need to know that I don't think funcom has illuminated to everyone: you need to install it into a separate directory (or just the new default) but you'll need to get the old localconfig.xml in and set it to 'read-only' to ensure TSW stays the way it is.
You can get this file at the following link:
cdn.funcom.com/downloads/tsw/client/LocalConfig.xml
Just drop it into your existing TSW game directory, set to 'read-only' and then relaunch the older client. It'll reset the loading screen to the older one, adjust some game files for the older client, and then you'll have the ability to get into both.
Just an FYI.