Plant 3D Generating ISO fails

September 30, 2025 Bob Felton

Issue:

When responding to an invitation to share access to an existing AutoCAD Plant 3D 2020 project, the project can be viewed after signing into the web address at https://docs.b360.autodesk.com/project but the project cannot be loaded from the 'Open Collaboration Project' from the Plant 3D's Project Manager.

 

Causes:

This message appears before 'Plant Collaboration has encountered an error':

The unusual error code for the 'Open Collaboration Project' command shows "Method not found:
'Newtonsoft.Json.Linq.JObject Autodesk.JsonApi.Model.ApiResource. get_Attributes()'"

 

Solution:

For this specific conflict, there was another clue to the source of the conflict when Plant 3D first started up.

    

Then:

and,

The solution was to locate and uninstall a third-party add-on called SweepSteelProfiles version 1.1 from KIM Projects.

Once that was uninstalled the shared projects were then accessible from the 'Open Collaboration Project' procedure in the Project Manager. 

 

 

 

 

 

 

About the Author

Bob Felton

Sr. Technical Support Specialist, Manufacturing<br><br>Bob Felton has been supporting Autodesk products for over 25 years including core AutoCAD, P&ID, Plant 3D, AutoCAD for Mac, AutoCAD Mechanical, and Vault. His background is in graphics with an Applied Sciences degree and ten years manufacturing experience drafting, as well as technical illustration, image editing, and even patent drafting.

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