benq drives from what is said are picky on which external enclosures they will run properly.
I doubt its an issue with dvdinfo.
you can try cd speed and see if you get the same problems. if you do its more than likely issues of compatibility with drive and enclosure
Thanks for your response, I did state in my 1st post, that my BenQ drive will run the CD Speed Disc Quality app with no problem on FireWire.
In fact my BenQ will run the DVDInfo Pro PI/PIF app using the USB connect, no problem. it is just Firewire that is the problem.
I currently have my BenQ installed as Sec Master internal IDE. This is for 16X writing & firmware updates. All Disc Quality apps work fine with this setup.
My Nec 2510A is in one external enclosure & my Lite-On 832S is in the other.
I want to know if I am an isolated case of failed DVDInfo Pro Disc Quality testing, when my BenQ is in my Prolific 3507 external USB/Firewire enclosure, or are others with a similar setup experiencing the same.
With the exception of a 12X writing ceiling when using an external case with my BenQ 1620, everything else works fine.