changing chapters causing problems

[DvDstyle]

BURNER: sony dru500 firmware f
Burning Prog: NERO 5.5.9.17

what i did:
Disc was 2-layer, but i only wanted first half, so I ripped DVD
with smartripper, choosing chapters 1-12 and the ending result is 3 VOB files ripped onto computer.

then I redid the IFOs by using IFOEDIT 0.932.

then use Nero to burn.

when playing on dvd standalone player, it just sits there and lags at random tracks. for that particular disc it was track 2 and 6. The rest were ok.

NERO however did pop up a message saying there could be a problem with the burn, but I assumed it was nothing. What could be the problem?
Is it Nero?
my way about doing it?
IFOEDIT?

Thanks

[sunmiztres]

never had the problem you are having but i use ifoedit vs 0.94, you could try this and see if the prob goes away.