I get this message too, but only when i finish the VAF file and then cancel the process and continue later on with the Recover option within DVD2SVCD an reuse the VAF file from the last time. I don't change any settings, but i still get the message. Normally u only get the message if u change to many settings within CCE2.5 (max. avg. max. bitrate etc.) for the next passes, then it will give this message.