I have gone through at least 50 hours of testing the burner with all aps I could possible use. The burner is software problematic. NERO and Roxio dont work. The list of programs that work with this burner in +R mode are as follows
Record Now Max
DVD Decrypter(Only the newest version)
I gurantee your problems recording to the +format will be solved with these programs. Also make sure to use Verbatum. Sams club has them in spindles of 25. Lable is Ricoh.