This is really going to be difficult & extremely time consuming if I have to burn each copy from my computer
Are you saying the original copy that MovieFactory 6 burns plays correctly?
I would think the ones that MF6 burnt wouldn't play correctly.
Use another dvd reader playback device to test the original dvd MF6 burns, not the burner that burnt the dvd.
I would also burn the dvd at 4X, the MF6 uses the MAX setting. It's under the burning options.
What speed are you burning at and do you have any packet writing software installed such as Roxio "Drag2Disk", Sonic "Record_Now", Nero "InCD", Ulead "Data-Add". The above software can affect burning dvd's.
I would create an ISO file from MF6 burning screen instead of burning the dvd directly.
Then you can burn the ISO file using any DVD burning software.
MF6 can burn the ISO separately. From the Launcher Screen it's "Copy Disk" -> "Burn From Disk Image". Burning as a separate process can be more reliable.
Also if "QuickDrop" is running in the background disable it. To prevent "QuickDrop" from loading you change this selection under it's preferences or options. Right-Click on the "QuickDrop" Icon (lower right of taskbar), select "Preferences" and uncheck "AutuLoad when window starts".
Remember to manually set the burning speed to 4X. This is the first step when troubleshooting burning problems (drop the burning speed).
After testing at 4X then higher speeds can be tested for reliability.
Also when burning ISO DVD images you can also manually set the burning speed & number of copies.