click "Settings and Tools" and under the mounts section, turn off Random, and Automatically. after that type in the NAMES of the mounts you want to use in the boxes. try and stay away from rare or hard to get mounts. then try it again. if it fails then please upload a new log as an attachment so we can see whats going on. http://www.thebuddyforum.com/honorbuddy-forum/honorbuddy-guides/35945-guide-how-attach-your-log.html
Session is invalid! usually when this happens its because you lost connection to our auth servers. make sure your putting more of a strain on your connection such as running torrents and such.
the only other thing would be your key being used somewhere else. but that would almost never happen if you connection was consistent.