System.nullreferenceexception 'object reference not set to an instance of an object.'

Revit
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1

Hello Everyone,

I got the next problem. When I’m starting up Dynamo using Revit 2021, I get the next error message:

image

As you can see, I can’t open Dynamo and I can’t activate Dynamo scripts. It only happens on my PC and account and only on Revit 2021. Does anyone have any idea of how to fix this issue? I’ve been searching for sollutions but couldn’t find it online

2

Hi, please see this:

Try the simplified experimental alternative first, it worked for my firm!

3

That worked, thanks

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