Hi @jasonhampleman  It looks like the Events were not authenticated. For more details you can refer to https://www.adobe.io/apis/experienceplatform/events/docs.html#!adobedocs/adobeio-events/master/intro/webhooks_intro.md#authenticating-events.  Also, I would encourage you to post questions on https...

See here: https://docs.adobe.com/docs/en/cq/5-6-1/developing/implementing-custom-predicate-evaluator.html for the details on your version of AEM 

See all common problems and solutions listed here: https://github.com/paulrohrbeck/aem-links/blob/master/problems_solutions.md

List of https://docs.adobe.com/docs/en/aem/6-1/release-notes/deprecated-removed-features.html

See: http://blogs.perficient.com/delivery/blog/2015/10/19/front-end-testing-with-hobbes-js/ and https://github.com/Adobe-Marketing-Cloud/aem-project-archetype/blob/master/src/main/archetype/README.md and https://docs.adobe.com/docs/en/aem/6-0/develop/components/hobbes.html

Are you deploying it on a server? If not, check if you have access to the felix console and all bundles are accessible. Not best but an ideal solution will be to backup launchpad and move it somewhere and restart AEM or unpack the jar file and then start the instance. 

See References below for more insight:https://helpx.adobe.com/aem-forms/6/get-xdp-pdf-documents-aem.htmlhttp://tv.adobe.com/watch/aem-livecycle/pdf-generator-demonstration/https://helpx.adobe.com/aem-forms/kb/pdf-forms-to-html5-forms.html

Check the API here: https://docs.adobe.com/docs/en/aem/6-2/develop/ref/javadoc/com/day/cq/notification/api/package-summary.html

See: https://shreshthkumar.wordpress.com/ Should help has a steps by step process of what you are trying to do. 

This should be possible, I will suggest you to reach out to the Target team to verify if the user has enough permissions on both Standard and Classic.