You may have to ditch your friend.

Friends don't let friends drive drunk... and they don't cheat each other out of intellectual property rights, either. Go and talk to your friend. If your side of the story is the God's honest truth, then your friend is in violation of your verbal agreement. If your friend doesn't want to play nice, then he/she is no longer a friend. Take him or her to court and win back your rights to the software.

Good luck to you. I truly hope all goes well and in your favor.

John J Reiser
newrisedesigns.com