716A 1.04u DVD-RW Burn Problems Help!

I am having problems playing dvd-rw in 2 of my dvd players which played dvd-rw’s in the past… Have burned dvd video in the past on dvd-rw with no problems, the problem is it will not load up at all now on the dvd players but plays fine on th PC. The movies are ntsc region free and burned with nero and all lower versions of nero. Nero burns the discs with no errors and completes the burn. Also have tested with DVD+RW in it burns and plays fine. Media used is Verbatim 4X DVD-RW/+RW. Any suggestions would greatly be appreciated.