What versions of the software are you using. What OS?? Generally if some copy programs will work and some will not it's a software, driver, issue not a hardware one. What Brand,and type of DVD's are you using?? Whats the rated speed 4x,8x,16x?? DVD-R did not burn well in my Maddog burner
Do you have aspi installed. I know that nero has there own thats installed with its software since 5.5xx or 6.0 but I had a problem with nero once and installed aspiv4.60 and that cured the problem. It doesn't hurt to have it installed even if your software doesn't require it. The case I had on my 16XDVD9-ext was the top case with the maddog name in the center. I believe that the bottom picture is the newest case and its also made by BTW. I don't believe there is a way to flash firmware on a USB enclosure, but I don't think that is the problem.