Just installed my new Pioneer DVR-A05U drive and it works flawlessly with the provided pioneer 4x DVD-R. However, it does not recognize the 4x Memorex DVD+R disks I bought at all. It doesn't even recognize it as a recordable disk. I tried several disks to make sure the 1st one wasn't bad. Is the a firmware or driver update I can get to make this media work? Thanks!