I’m trying to access a model via API (the model is made in Teddy).

I use the path described in the file: “connect_to_cdb.sln” available in the path:
“C:\Program Files\SOFiSTiK\2023\SOFiSTiK 2023\interfaces\examples\c#\connect_to_cdb”

When inserting lines from 86 to 100 I have the error as in the screenshot below:

Could someone help me what the clib1.h file is and where it can be found?

.h files are header (function definition files) used in c++.
However there is no clib1.h in the c++ api for sofistik.

I think you need to ask sofistik support.