I just noticed that you did not have the project files anymore, so most of the questions I have don’t really apply. The problem may be that the Video_ts folder is under 2GB which will usually cause any DVD player to choke if not burned correctly.
Regardless though, this is what I would recommend you do as it will solve this and a few other problems as well:
Download and install DVDDecrypter and DVDShrink:
http://www.dvddecrypter.com/
http://www.dvdshrink.org/where.html
You may want to reboot.
Open UP DVD Shrink and click the “Open Disk Button” (The problem DVD should be in the Drive and select the disk from the Windows Explorer-like tree). It will take a minute to analyze it, and if you get any errors, let me know what they are.
Once it is done analyzing hit the “Backup Button” and a window will open. Go through the options and the ones that you only need be concerned about are the ones where you select the Tempoprary location for the files and the Burning Method. For the burning method select: Create ISO and burn with DVD Decrypter. Any other settings should be at their default. (Sorry I am at work, so I am doing this from memory)
Click Okay, it should write the ISO to disk, and then automatically burn the ISO with DVD decrypter.
Hopefully that will solve the problem. I do a lot of video editing and conversion and DVD mastering , and this has always been the most foolproof method (Creating an ISO and then burning with DVD Decrypter). Nero, if you are using it, I have found is very spotty.
The whole process should take about half and hour (depending on drive/burner speed).
If you still get no love, then take one of your commercial movie DVD’s you have and follow the same process, and see if you can get it to play. If not, your original project files are probably not DVD compliant (and you are truly pooched :cry: ), or possible your MEDIA is bad as croman has said.
Good Luck