I would like to thank You for Yours proffesional answer. I will use aptitude update and i will try to remove and reinstall live-magic if The error will still persists. Yesterday, i have not been able to finish The process, i only have got build log and no iso have been created.
Livehelper algorithms are outstanding, because resulted live .iso or USB image will contain all newest packages directly downloaded and builded from The Debian Squeeze repositories, and this program is not strictly depend on The installation of The system, from which live-helper or live-magic have been executed.
Very well done.
My kind pleasment for Yours development team is, what about to make official remaster application for Debian Squeeze, so resulted .iso image would contain also all applications, user settings, i think, that many of us will know about Remastersys scripts.
But what about triing to build somethink similar officially for Debian, so resulted images will be really correct, including reliable build of initramfs and other kernel related modules.