Hello, I have the same problem. Dynamo crashes when i try to open a new script. Its just a blank screen and then revit crashes and i have to force close revit.
I have uninstalled and re-installed revit . . . Didn’t work
I have uninstalled and re-installed different versions of Dynamo . . . didn’t work
Revit works fine without Dynamo open.
Go to manage.autodesk.com and download the most current Revit update for your version. Install that. Then uninstall all things dynamo including dynamo core, dynamo for Revit, and dynamo studio. Then download the desired dynamo version and install dynamo core and dynamo for Revit as needed.