I just upgraded to 1.8.4, and now I'm having troubles with the login screen. I have it set so that you have to log in to see the site, but now when I type in a (correct) username and password, it won't redirect me to the site. If I type in the address manually then it works. What files should I copy over from 1.8.3 to fix this (if this is how it can be fixed). It worked fine for me for 1.8.3. Thanks!