I can’t get Store purchased DVDs to start on my computer. Earlier DVDs that I have burned in the past start just fine. I have Windows XP Home Edition and Norton 360 V 2.0 installed. Somehow it seems to be a problem with settings on the new DVDs. Maybe Region Codes or ??? I am using XPack software but have tried others. I have this problem with all player software. Windows says the new DVDs are corrupted but it plays my own DVDs burned earlier.