Enm, Bus and S-function builder

Hello everybody!

My situation is the following:

1) I have declared an enumeration class for simulink. 2) I have a s-function builder which returns a Bus. 3) This Bus, has as one of it's attributes the Enm which I have declared in 1).

Even though the enm declaration is correct, and I can use it with other simulink blocks, when I try to compile the s-function, I get a build error.

In the xxx_bus.h file, which is automatically generated by MATLAB, the compiler complains about this line:

Enum:data_type_enm data_type;

Any ideas on what to do? (The main problem is that when I compile, the xxx_bus.h file gets overwritten. This means I cannot just change the header file and try to recompile. I end up with the same faulty file, automatically! )