Oracle eliminated public support for Java 6 in February and LabKey deprecated Java 6 support in 13.1; for months, we've encouraged everyone to upgrade to Java 7. We're now officially pulling the plug on Java 6: as of tomorrow, the code on the trunk will no longer compile or run on Java 6. If you're still using that 6.5-year-old JDK then it's definitely time to upgrade...

Adam