Unable to cast transparent proxy to type 'SAP2000v19.COAPI'"

Binh94 Map 0 Reputation points
2025-05-05T23:51:51.7833333+00:00

User's image

Hi everyone, I'm encountering an error in AutoCAD and I'm not sure what it means or how to fix it. I'm getting a pop-up window with the title 'AutoCAD' and the following message

Ah, so it builds fine in Visual [Studio], but when used externally, it has the error like in the picture.

Thanks everyone!

C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
11,462 questions
0 comments No comments
{count} votes

Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.