BTC-32-10-40 weird problem

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hi , i have a problem whit burning divx movies , when i burn a movie everything goes fine , i dont get any error's orso , buth after finishing the disc it isn't readable , i tryd several program's ( nero , cdmate , stomp ) buth it's always the same , when i burn something else like a music cd or iso everything works fine , i olso tryd to burn at lower speed , buth it won't help anything , i tryd another reader , i even tryd another os ( win2k-sp3, xp-sp1) , buth still the same , does anyone have an idea what could be wrong ?


thx in advance