I am Using revit 2019 and Dynamo after working for about half hour the dynamo stopped updating the values and crashed with error Video driver not found error message.
Can you post your Dynamo log and Revit journal from that session?
where can I get dynamo logs can you give me specific location?
Something like this:
Appdata/dynamo/dynamorevit/version/logs
The default folder for packages is the similar so you can use that as a guide.