Starting on Monday, June 18th, Pogo will be requiring all players on Windows operating systems to be running the latest version of Java (version 7, update 5). To see if you have the latest version of Java, use the official Check Java page. If you are running the latest version, you’re all set. If not, uninstall Java and then install the latest version of Java.
Once everyone (on Windows) is upgraded, Pogo says it will “help ensure a more consistent and enjoyable experience” for their players. (It’s about time!)
Thanks to MomsBassetHound and mellowmaddy for writing in with the news.
Update 6/13: Pogo has changed their news to now include this extra helpful information:
If you’re using Java 1.6.31 and 1.6.32 and not experiencing issues, no need to do anything. If you’re up to date, no need to do anything.
So maybe you won’t be required to upgrade on the 18th. Your mileage may vary.
If you have updated and you now cannot load games:
Uninstall all versions of Java (you can do this in Windows from the Control Panel) and use this link to install Java version 1.6.33 which is the latest of version 6. (Thanks to Miss Panda for the link!)