After updating Nero_5 to Nero_6 PC was damaged?

I had no problem with burning DVD disks on standalone computer.
When I used Architect to create DVD files and burn on my new powerful
laptop it burned not playable disk.
Than I tried to burn the some program on my standalone PC
suddenly it failed as well.
I discovered that when I installed on both computers Nero6, Architect
software which before was working ok now failed as well.

The message from Nero itself was "DVD-files reallocation failed"

Nero6 ruined both computers and when I was looking for answer I noticed
that an internet is infested with that similar question.

I tried uninstall Nero6 but it didn't help.
Do I need to reformat HD and reinstall all the programs from the
beginning?
Its a nightmare!

Chris
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When I reinstalled windows and programs DVD ROM doesn't want to burn as
before???
with the massage "DVD-files reallocation failed"

Before Architect was burning without any problem !!!

chris