Applet detection with 8u261 fail with following exception:

security: Main class is: sun.plugin2.main.client.PluginMain
JVMLauncher.afterStart(): starting JVM process watcher
java.lang.InterruptedException
at java.lang.Object.wait(Native Method)
at sun.plugin2.message.Queue.waitForMessage(Unknown Source)
at sun.plugin2.message.Pipe$1.run(Unknown Source)
at com.sun.deploy.util.Waiter$1.wait(Unknown Source)
at com.sun.deploy.util.Waiter.runAndWait(Unknown Source)
at sun.plugin2.message.Pipe.receive(Unknown Source)
at sun.plugin2.main.server.JVMInstance$WorkerThread.run(Unknown Source)
netscape.javascript.JSException: Plugin instance for applet ID 1 was already