I have some difficulty when using MBD tool box with external .c/.h file. It failed to build, I am using Matlab 2017b. The Matlab team don't think its their issue. Please "Run"/"Build(Ctrl+B)" the attachment file. It failed when building. I try to clean up folder and rebuild, it still doesn't work. It seems something goes wrong when I add additional .c file. Normal Run is fun without error. Did I miss anything?