Dynamo error message in Revit

I have started getting the following error now in Revit 2020, 2021, 2022 but not 2023. Not sure when it started or whats causing it. Any suggestions would be great

System.TypeLoadExceptions: Method ‘SignRequest’ in type
‘Greg.AuthProviders.RevitOxygenProvider’ from assembly
‘GregRevitAuth, Version=1.0.7057.20655, Culture=neutral,
PublicKeyToken=null’ does not have an implementation.
Dynamo.Applications.DynamoRevit.InitializeCoreModel (DynamoRevitCommandData
Dynamo.Applications.DynamoRevit.ExecuteCommand (DynamoRevitCommandData


Likely a conflict with an add-in, or a missing Revit update. Best to get in touch with support directly by creating a case at Manage.Autodesk.com.

I’m getting the exact same message in Revit 2022 when I try to launch Dynamo. Were you able to reach a resolution with Autodesk support?

EDIT: Actually, I just uninstalled the CTC BIM Manager add-on and then I was able to open Dynamo again. I only had a trial version of the CTC add-on and the trial license had expired. Not sure if that’s relevant, just another tidbit of information.

It seems like it went away, could be a plugin I had installed as well

REvit 2021 Dynamo Error
Same problem with Revit 2021. Removing CTC BIM Batch Suite solved the issue.