This error occurs because the model name and the header file being included have the same name. When TAR tries to package the files, it attempts to add the custom include file "types_c.h", as well as a header file corresponding to the model (also "types_c.h").
To get around the issue, simply rename either the custom included file, or the model (renaming the model should be easier). If you rename the model to "types_c_model.slx", the model should run/build without issue.
