The issues related to Epic players logging in to the North American and European PC/Mac megaservers have been resolved at this time. If you continue to experience difficulties at login, please restart your client. Thank you for your patience!
It's being discussed in the BUG REPORT section on the forums. There is a thread titled "Quest not working" (or something very close to that). In that thread is a number of things to check, and I was able to fix the problem I was having. Two of my files were changed to "0" when they should of been "-1".