Burned dvd is not readable anywhere

Hi, I was able to burn a dvd with nero but it is not readable anywhere, even in the dvd burner.

I’ve got a Plextor px-708a 1.04, and I’ve used imation dvds (ricohjpn r1 accordingly with dvd identifier)

I’ve burned the dvd in udf/iso mode using the template that we have in the guides tutorial in the forum.

Any reply will be welcome!

My system:
Pentium 4 1.7ghz , 60 gb hd, 512M ram
Win xp home edition

I’ve got installed:
clone dvd 2.5
Dvd xcopy platinum with ripper
dvd decrypter 2.10

Thanks in advance