Bug report from Dynamo 3.5.0.8297

[AgenceMarianRubio]

Dynamo Version

3.5.0.8297

Host

No response

Operating System

Microsoft Windows NT 10.0.19045.0

What did you do?

Bonjour, à l'ouverture de n'importe quel fichier dynamo depuis revit 2026 j'ai un message d'erreur qui s'affiche : "Could not load file or asssembly 'HelixTookit.Wpf.SharpDX, Version=2.17.0.0, Culture=neutral, PublicKeyToken=52aa3500039caf0d. Le fichier spécifier est introuvable". Je n'ai pas ce problème en revit 2025.

What did you expect to see?

What did you see instead?

What packages or external references (if any) were used?

No response

Stack Trace

No response

Details

CLR: 8.0.14

[github-actions]

Thank you for submitting the issue to us. We are sorry to see you get stuck with your workflow. While waiting for our team member to respond, please feel free to browse our forum at https://forum.dynamobim.com/ for more Dynamo related information.

[achintyabhat]

@AgenceMarianRubio Do you have DynamoFormaBeta for 2.x package installed? We have seen this error when this version of this version of Forma package is installed in Dynamo 3.X as it is not compatible with the version of Dynamo you are in. You can use DynamoFormaBeta package.

[AgenceMarianRubio]

I tried to installed the package but it’s dosen’t work. I view this message :

[achintyabhat]

Can you please uninstall DynamoFormaBeta for 2.x package and then install DynamoFormaBeta package.

[AgenceMarianRubio]

[achintyabhat]

You can delete the package as shown in the image below. Dynamo will mark this package for deletion at the next start. So, you need to close Dynamo and the host (Revit/Civil3D) and restart again. Another way to do it is by deleting the packages from package folder.

[AgenceMarianRubio]

ok I have problem with DynamoFormaBeta too

[AgenceMarianRubio]

but the file open with error

[achintyabhat]

So, looks like uninstalling Forma package got rid of the HelixTookit.Wpf.SharpDX error for you. That's a known bug as DynamoFormaBeta for 2.x package is not compatible with Dynamo 3.5.
From the screenshot, I can't see what's upstream in your graph to point to the first node that is throwing the warning. Nor can I see the warning message. What does the warning say now? Can you share a screenshot which captures the full graph and also make sure you have the node preview bubble open so we can see the outputs from each node.