-.-
making it clear:
a. include all the files, images and what not you made in the game
b. add the dll and make sure they put it in windows\system32
upon failing, get sick of it and command them to dl p.knights on their own, then it will work unless you added extra stuff from outside rtp and forgot to add them -.-
(you will encounter the same problem sending files you made in the legal version, but you can't expect people to buy the legal version to play your game in the worse case now can you?)