topic Re: Revit 2024 - Constantly getting managed exception with OpenAndActivateDocument in Revit API Forum

Revit 2024 - Constantly getting managed exception with OpenAndActivateDocument

hzamani — Mon, 22 Sep 2025 07:06:11 GMT

Hi there,

I am getting Autodesk.Revit.Exceptions.InternalException: A managed exception was thrown by Revit or by one of its external applications, how ever I call the OpenAndActivateDocument.

I have tried multiple models, stand-alone or workshared. I also have tried different overloads eg passing model path as string with OpenAndActivateDocument(path) or OpenAndActivateDocument(modelPath, options, bool) - none of these work. This is just in Revit 2024. Any version before that is working fine.

Does anyone have any suggestions what could be the issue here?

Regards

Re: Revit 2024 - Constantly getting managed exception with OpenAndActivateDocument

naveen.kumar.t — Mon, 22 Sep 2025 07:47:33 GMT

Hi @hzamani ,

Could you please confirm if you are able to open the same models manually in Revit 2024 via the Revit UI without any issues?
Is this issue specific to the API?

Additionally, could you share the non-confidential sample code you used?
It would also be helpful if you could provide the journal file via the Private Forum chat so that I can analyze the issue further.

Re: Revit 2024 - Constantly getting managed exception with OpenAndActivateDocument

hzamani — Mon, 22 Sep 2025 23:31:44 GMT

Hi @naveen.kumar.t ,

This is only happening through the API. I can open the file through the UI just fine.

The original code is in C#:

OpenOptions openOptions = new OpenOptions(); // I have tested commenting out the two lines below for modifying the openOptions, still getting the same error openOptions.DetachFromCentralOption = DetachFromCentralOption.ClearTransmittedSaveAsNewCentral; openOptions.SetOpenWorksetsConfiguration(new WorksetConfiguration(WorksetConfigurationOption.OpenAllWorksets)); Directory.CreateDirectory(@"C:\Revit_Projects"); string newLocalPathAndName = Path.Combine(@"C:\Revit_Projects", modelNames[0] + "_" + uiApp.Application.Username + "_" + DateTime.Now.ToString("ddMMMMyy_HHmm") + ".rvt"); ModelPath localModelPath = ModelPathUtils.ConvertUserVisiblePathToModelPath(newLocalPathAndName); var createdDoc = uiApp.OpenAndActivateDocument(localModelPath, openOptions, false);

I have also tested this in python with Revit Python Shell:

path = r'C:\Users\hzamani\Desktop\Project1.rvt' #mpath = ModelPathUtils.ConvertUserVisiblePathToModelPath(path) #options = OpenOptions() #options.DetachFromCentralOption = DetachFromCentralOption.ClearTransmittedSaveAsNewCentral #options.DetachFromCentralOption = DetachFromCentralOption.DoNotDetach #options.SetOpenWorksetsConfiguration(WorksetConfiguration(WorksetConfigurationOption.OpenAllWorksets)) uiapp = __revit__ #uiapp.OpenAndActivateDocument(mpath, options, False) uiapp.OpenAndActivateDocument(path)

No matter what I do I still get the same error. This is happening in Revit 2024. Running the same code in Revit 2025 crashed Revit! In older version it's working fine.

Thanks

Re: Revit 2024 - Constantly getting managed exception with OpenAndActivateDocument

naveen.kumar.t — Wed, 24 Sep 2025 13:24:21 GMT

Hi @hzamani ,

A suggestion from Engineering team: Could you try using "Save As" instead of "Close and Save" to clear the transmittal status and mark the model as a new central?

Re: Revit 2024 - Constantly getting managed exception with OpenAndActivateDocument

hzamani — Wed, 24 Sep 2025 22:49:02 GMT

Thanks @naveen.kumar.t will give this a try.