Apprentice

[mohamedtawakol12]

Hello I am trying to implement simple code using apprentice on VB.NET and the following error occurs 

"System.Runtime.InteropServices.COMException: 'Retrieving the COM class factory for component with CLSID {C343ED84-A129-11D3-B799-0060B0F159EF} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).' "

I searched with the error and it showed me a solution to make sure inventor view is installed so I did install it again. but the error persists. And I checked the object viewer the object ApprenticeServerComponent is empty as shown with the attached picture. Can anyone please suggest a fix ?

[bradeneuropeArthur]

What version of Inventor are you using?

[mohamedtawakol12]

I am using inventor 2021 and i installed inventor viewer 2021 when trying to fix

[bradeneuropeArthur]

have you removed older versions of Inventor?

[Michael.Navara · Accepted solution]

Usual mistake is bad compile settings. Application which uses Apprentice MUST be compiled as x64. Not x86 or AnyCPU with "Prefer 32-bit" option.

[bradeneuropeArthur]

That is true!

[mohamedtawakol12]

If i am using visual studio 2019 community , how can i make sure i am compiling on x64?

[mohamedtawakol12]

Yes i had removed 2019

[Michael.Navara]

Compile as x64

And this is my recommendation how to configure Autodesk.Inventor.Interop.dll

[mohamedtawakol12]

Thank you very much this solves the first error, but sadly I encountered another error as you can see in the attached image. I am trying to change parameters with apprentice or is this not possible with apprentice ? 

[Michael.Navara]

This is not a bug, this is a feature.

In ApprenticeServer is available different set of functions and properties. Some of them is not implemented.

Usually Apprentice is used for manipulation with iProperties and document references. Manipulation with parametrs and other modeling features is not available.

[mohamedtawakol12]

Ah, Thanks so I can't access parameters through apprentice ? From what I read on the Api help on apprentice that the top level objects are the big difference and other objects work fine is there a resourceI can learn more about apprentice from?

[Michael.Navara]

You can use standard API help

https://help.autodesk.com/view/INVNTOR/2020/ENU/?guid=GUID-F2A12822-98DE-4638-B1C7-6BEEF821D50A

https://help.autodesk.com/view/INVNTOR/2020/ENU/?guid=GUID-06D49EB6-7871-4A1B-917F-756735B5D0E7