Today (Saturday, 2-April) after patching up from yesterday's version successfully, it seemed the game would launch but instead this message displayed:
I then received the option to send an error report. Restarting the patcher doesn't resolve the issue.
Any known workarounds?
("Wait for the next update" -- I'm aware of this solution )
Previous successful login: 1-April, Friday
OS: Win 7 Home Premium SP1
Favorite candy: black licorice