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Symptom: When trying to add an SNMP service monitor, the applet does not load and generates the following error:

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Java Plug-in 1.6.0_23 Using JRE version 1.6.0_23-b05 Java HotSpot(TM) Client VM User home directory = C:\\Users\\slatimer ---------------------------------------------------- c: clear console window f: finalize objects on finalization queue g: garbage collect h: display this help message l: dump classloader list m: print memory usage o: trigger logging q: hide console r: reload policy configuration s: dump system and deployment properties t: dump thread list v: dump thread stack x: clear classloader cache 0-5: set trace level to ---------------------------------------------------- java.lang.reflect.InvocationTargetException at com.sun.deploy.util.DeployAWTUtil.invokeAndWait(Unknown Source) at sun.plugin2.applet.Plugin2Manager.runOnEDT(Unknown Source) at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.SecurityException: trusted loader attempted to load sandboxed resource from http://192.168.0.175:9999/java/ireasoningsnmp.jar ....

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Resolution: This issue is related to the JRE plug-in and up.time's Java middleware using both signed and unsigned code.  Please refer to the Mixing Signed and Unsigned Code article on the Oracle website for a description of the issue and workaround steps.