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This is often caused by running your web app container (ex: tomcat) under a SUN Oracle JDK or JRE that is not version 1.6 or 1.7. Verify that you are running with the required JDK or JRE. If not, to solve this, download & install JDK or JRE 1.6, 1.7 (JRE must be update 21 or greater) from here Set your JAVA_HOME on windows to the JDK or JRE install directory on your computer. Then restart your web app container.
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