Common denomonator....while I am playing you are updateing (thanks for the updates! but...)the last two updates...game locks then my save file is unable to be opened.
I play while I update as well, but am still able to load afterward, but perhaps it is a combination of that and some system differences. Check out my comment to Zalfak, I may add that to the FAQ as well. I don't think this load issue is something I can troubleshoot, because I can't reproduce it from my system. It is not new, it is something that has always been experienced by about 5% of players. Known causes are grinding in more than 1 window (on multiple chars) and flash/browser/system crashes, but neither of those was necessarily always present.
This exactly was the intention