Works with DVD-RW but not with DVD-R Disc`s?

Hi All

I used DVD2one v112 and burned with nero v5578 on a DVD-RW disc and it works on all 3 of my standalone DVD Players.I use a DVD-R disc,it only works on the Computer,PowerDVD see it and then loads it auto… Ive used Ifo-Edit burned it with Nero on a DVD-R disc and plays on comp. and standalone DVD Players. Ive dragged all the movie files into a VIDEO_TS folder and dragged the folder to the root direct. of the DVD disc.. Im Confused??? Help
Thank Kevvv:confused: