Inventor Apprentice Server - Open dwg Catastrophic failure

[5107839414]

Hi,

I'm trying to open Inventor DWG with apprentice server but it always throws "Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))".

I'm using Inventor 2022 with same Apprentice version.

The exception is thrown on the following line:
Inventor.ApprenticeServerDrawingDocument dwgDoc = apprentice.Open(dwgPath) as Inventor.ApprenticeServerDrawingDocument;

I can open .ipt, .iam, .idw files but not Inventor .dwg files.
I tried different Inventor .dwg files but none of them worked.
Any ideas why?

[bradeneuropeArthur]

Have you installed more versions of inventor?

What if you convert the dwg to idw and than open it with apprentice. Does that work. 

[5107839414]

If I convert Inventor .dwg to .idw then I can open file in apprentice.

I had multiple versions of Inventor.
I removed 2021 version, restarted computer but the issue still remains.

[bradeneuropeArthur]

does design assistent work?
Have you also Autocad installed?
Have you set to default use Autocad to open dgw files?

[5107839414]

Design Assistant works.
I have Autocad installed. 
I tried both Autocad and Inventor as default program for opening .dwg files but apprentice still throws the same exception.

[bradeneuropeArthur]

can you check the file association for the dwg file?

https://www.digitaltrends.com/computing/how-to-change-file-associations/

[5107839414]

.dwg files are associated with Inventor right now.

I also tried to associate them with Autocad, but I still had the same issue.

[5107839414]

This is my Exception stackTrace:

at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData)
at Inventor.ApprenticeServer.Open(String FullDocumentName)
at InventorProductionExporter.Util.ReadDimensions(Database db) in D:\Dropbox\Developing\InventorProductionExporter\Util.cs:line 31
at InventorProductionExporter.MyCommands.InventorImportNumber() in D:\Dropbox\Developing\InventorProductionExporter\myCommands.cs:line 62