I tried on Apple 10.4.11 and it thinks the DVD is blank but the TS files are in there. All Apple has in support is some worthless codec that doesn't do anything. I also have dual boot so I went into Windows, upgraded to WMV11 but still would need to buy decoding software. Universal's return page is down.
This is why you shouldn't sit on unwatched DVDs for that long. So what do I do now? I'll keep banging my head and poking at it until something works.

ETA for those searching: The link came back, the exchange was made. Life is peaches and cream.

Have you tried it in VLC? No decoding software required, it's all built in.

I'll check it out and come back with results. Good tip!

Nope. Didn't work.