Although I don't think Duplex Secure's SPTD is your main problem this is how to uninstall it .
The main thing is to download it & use the uninstall .
I was unclear were you able to extract the files from the DVD with your laptop ?
@ chef , Would you post a link to the -VR drivers ?
I want to note that the -VR mode is unusual & not found on many DVD recorders as an option. I think some people get this confused with the DVD -R/RW discs the two are only minorly realted .If I'm correct it only works on DVD -RW discs.
Neither my Windows Vista desktop or Windows7 laptop will read this kind of disc. ISOBuster Pro is able to do an extract from either though.
At least for me . I only have one right now that I kept for testing purposes but it is finalized. The recorder works but is mothballed.