if (!theJarContainer.loaded) {
jarsLoaded++;
theJarContainer.loaded = true;
theJarContainer.classManager = classManager;
theJarContainer.primManager = new ExtensionPrimitiveManager(extName);
classManager.load(theJarContainer.primManager);
}
// Jars that have been removed won't get this flag set
theJarContainer.live = true;