Adding scripts to run at startup

Hi all,

I have the same problem. Working with WP77xx
Trying to get a program running on startup with init.d. Am I missing some kind of Linux/Yocto configuration that does not allow easily to add startup scripts?

Best,

Jaan

Update:
Or does this post apply? Start up scripts not working - #2 by zabaulkhan
Thus in order to add init.d startup script, I have to rebuild Linux!?