When the dll of KBC. PetroSIM. Interop is referenced, the error 80040154 without a registration class occurs during code calling,

When the dll of KBC. PetroSIM. Interop is referenced, the error 80040154 without a registration class occurs during code calling,
Failed attempts:

Regsvr32 registration: The module has been loaded, but the endpoint DllRegisterServer cannot be found

Regasm registration: Enter the complete regasm path. The registration is successful, but the problem persists.

Change the project platform to x86: the problem persists.

 

Solution:

Just uninstall and reinstall Petro-SIM.

In the previous installation, Petro-SIM can be used normally, but it does not seem to have been registered. Just reload it.