All I can say is we've always used a Java 6 SDK for the Java components in MapGuide. - Jackie -- View this message in context: http://osgeo-org.1560.x6.nabble.com/What-Java-version-is-needed-for-Mapguide-3-0-tp5232882p5232944.html Sent from the MapGuide Users mailing list archive at Nabble.com.