Every time I try to log in when the game needs to update itself, it closes the game, opens the update screen, and promptly crashes. The next time I open it, it will go right to the update and work correctly. I looked in the launcher log and compared it to the successful update, and the crashed one was the same except that it stopped after this line:

2010/10/28 22:01:44:042 INFO i.a: Downloading resource [url=http://download.threerings.net/spiral/20101028181822/patch20101026201351.dat, size=1290559]