Fix: Agent did not run with J2SE 5.0 (aka JDK 1.5)
Release 2.21.0 - 2.21.2 did not run correctly on J2SE 5.0. On startup, the agent reports:
Unable to start New Relic agent: java.lang.UnsupportedClassVersionError: Bad version number in .class file
If you are running J2SE 5.0, please update to agent version 2.21.3.