Homebrew Backup loader error: Read error 342

[pawi94]

I've two games, tv-show king and wii music. I burned them to Fujifilms DvD-R 4.7gb at 4x speed.
But when i load backup launcher and press start game or something i just tells me Read error 324.
Any1 who knows whats wrong or how to repair this please respond

Do i have to patch it? and what is patching?
Or doesn't these games work with backup launcher?

 

[Distrance]

Media read error. Try other discs.. Since -R is no good, try +R or another brand.

Could also be cios error but I can't say much about that... On me it helped by swapping the disc type.