Thanks @jacob.small
I removed my pyRevit (4.6.12) add-in from Revit and that did the trick.
While doing that I also found 3 packages in my 1.3x Packages folder that were made for 2.0 and removed them as well.
Forgot to add the sweet little graph @jacob.small shared with me to be able to check what version of Dynamo the custom packages I had installed were built on. It runs in Dynamo 2.0
What Package Engine.dyn (14.1 KB)
Thanks for your help!