In case you have problem enabling Advanced Portal Reports due to "java.lang.IllegalStateException: The bundle is uninstalled" exception, please follow the steps in this article to fix this:
https://confluence.atlassian.com/jirakb/add-ons-cannot-be-enabled-due-to-java-lang-illegalstateexception-the-bundle-is-uninstalled-exception-1141994189.htmlPage Comparison
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