vcd to dvd

[manok]

am trying to put a vcd 2 disk movie onto a dvd.iam using isobuster and tsumani dvd author first disk works perfect second always freezes after it is encodeded. never in the same spot have redone it 4 times and freezes in 4 different places. this is trying to play from the file on the hard drive and also same thing if i burn it.in authoring see no problem in preview any help would be appreciated.thanks in advance