Originally Posted by Markie
I had one success - Grand SF and one failure - SF Airport this week.
The failure meant that I kept not getting access to the check-in page, with a message from explorer in the bottom left, helpfully saying Errors on Page. This happened even from the terminal in the lobby at the GH SF.
Try this link and it might help:
http://www.hyatt.com/hyatt/profile/r...webcheckin.jsp