S-Function is not considered as inlined for code generation although TLC-File is on path

Hi,

I implemented a S-Function in C which compiles and simulates fine. During Code-Generation I receive the following error:

% Block '...' is a non-inlined S-function, which is not supported with the current configuration. Consider selecting Support non-inlined S-functions.

The Simulink-Setting to only support inlined S-functions is intended. The C-File, compiled MEX file and TLC are on path. The C-File implements the mdlRTW function. The block "Simulink/User-Defined Functions/S-Function" is used in the model.

Here is the empty TLC-File:

%implements "block_reinterpretcast" "C"

%function BlockTypeSetup(block, system) void
  // Just a comment
%endfunction %% BlockTypeSetup

%function Start(block, system) Output
  // Just a comment
%endfunction %% Start

%function Outputs(block, system) Output
  // Just a comment
%endfunction %% Outputs

What could be possible reasons for that error? I use the same configuration with other S-Functions without issues. Thank you for any ideas.

Alexander