When I was trying to figure out what had gone wrong with this ADE process, I ran across the following list of ADE errors:
https://helpx.adobe.com/digital-edit...-editions.html
Of course, it's not complete since the error I originally got from it ("Error! Check Activation") isn't in it. But, I'm wondering if it's Adobe's activation servers throwing those errors or if it's just ADE. If it's the servers, can the plugin try catching them and passing the actual problem on to the user? Just wondering.