Applets now are required to contain additional information in their .jnlp files to document the files used, either external or local. But if you are working with older code, such as the FileMaker 11 Server Admin Console, the required manifest information is missing and your applet will halt with an exception like this:
java.lang.SecurityException: Missing required Permissions manifest attribute in main jar: http://localhost:16000/admin-client-lib/admin-console-client.jar
at com.sun.deploy.security.DeployManifestChecker.verifyMainJar(Unknown Source)
at com.sun.deploy.security.DeployManifestChecker.verifyMainJar(Unknown Source)
at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Thread.java:744)
Continue reading “Java Applet Issues with Java 7 Update 51” →