When you say your AE is updated fully, is that 13.6.1 public beta or 184.108.40.206?
Try it in 13.2 and see if it behaves.
My current version of AE is 220.127.116.11
I have also tried it on 18.104.22.168 which is the earliest version of AE that we have and still no luck.
CC 2015 (AE Version 13.5) is when they introduced the first parts of the new architecture. I don't know if Video Copilot has released an updated version of their plugin that works with the new version of AE. You might check with them.
In the meantime, try it in version 13.2 (AE CC 2014) which is the last version of AE that used the old code. How to Find and Install Previous Version of Adobe Apps in CC 2015