Problem when trying to boot from DVD...

[DemoNMorph]

Hello!I just burn a DVD with Leo4allv3,it's the second DVD with same ISO(Leo4Allv3) and when to boot from it(BIOS is set to boot from DVD-RW),it gives a message,something like this :"Boot config file 'apple.com.plist' not found..." ; what is wrong?this distribution is great for me and i'm pretty sure that works...but i still receive this error...
Help please!Thank You!