I used the same media for the copies as the original (the original does play), the disc was finalized (otherwise it won't play on my Mac) and I used the DVD (copy) method in Popcorn1 (1.3 I believe). I have also copied the VIDEO_TS folder and burned that way and got the same result.
I guess really what I am wondering is if anyone is aware of any standalone recorders putting restrictions on DVDs. If so is there a way around it? I'll post back with the recorder model when I get home.