Burning w/ RecordNow DX

I have a strange problem. I have both RecordNow DX and Nero on my computer. I would prefer to use RecordNow because, for some reason, DVDs burned by Nero won’t play in some DVD players in my apartment but will in others, while RecordNow DVDs play in all. The problem is this: when I open RecordNow, it tells me that it cannot recognize any recorder on my system. If I try to manually make a DVD, after I add files and hit “Write” it tells me I must select a recorder from the list (which is empty because it doesn’t recognize any). However, when I go through the RecordNow Wizard, my burner shows up, and I can successfully burn a DVD. Can anyone offer a suggestion to this? I use an NEC 3520 burner. Thanks.