Error installing Revit 2018 – A newer version of Dynamo Add-in for Revit or Dynamo Core is already installed
For those who have installed 2017 software latest updates, especially Dynamo Revit or Dynamo Studio, you may encounter the error listed above when trying to install Revit 2018.
The solution is to keep clicking OK until it is done installing. Do not interrupt. It will eventually open up. After launching Revit 2018, check to see if you have the latest version of Dynamo Revit and Dynamo Studio.