Please help, im going crazy........................

I have a HP 200i dvd burner. Im using Studio 8 to capture, edit, and create the dvd compliant mpeg. I have used both Sonic MyDVD and Ulead DVD Workshop 1.0 to author menus and burn to DVD. My settop player is an RCA 5240P, which works with both +r and +rw media.

Everything works fine with burning +rw discs. However, i can't get +r discs to work doing the exact same thing.

What am i doing wrong??????????????

Thanks,
B