Panasonic RV32 wont play discs!

[Skeith]

I own the panasonic rv32.
It wont play any dvds that i have written on my computer.
my friend wrote a dvd for me and it played fine.
the even stranger thing is that my mother has the RV32, manufactured only a month apart and it has played all of the dvds that mine wont, withought fail.
why wont my player read the discs that i wrote, and my mothers will?
they are the exact same machines!

feedback would be apreciated.

[gastorgrab]

Newer firmware.

There is a link to a firmware update disc somewhere in the DVDPlayers feedback.
.

[Skeith]

Thanks.
i had a feeling it was the firmware but i didnt actually think that they would come out with a new version in a few months.