[QUOTE=salmalover;2467909]My DVD player is a SONY HDMI NS601HP[/QUOTE]
This is your problem. Sony are known for being a royal pain in the proverbials when it comes to supporting region-free playback.
You could try running your DVDs through DVD Shrink and setting the region code to whatever region your are in (presumably 1-US or 2-UK/Europe+) rather than region free, and then burning again.
Personally, I made a vow years ago never to buy any Sony hardware again; it only encourages them!