I keep receiving a "Could not find a valid Java virtual machine to load" message, even though I chose the version bundled with the Java virtual machine.

Currently (July, 2009) there is a problem with the bundled version of the program. If you receive this message, please do the following: 1. Uninstall the AT 2. Download the latest version of Java: http://www.java.com/en/ 3. Re-install the AT, selecting the version that does not include Java