non riesco ad installare lo scanner hp 2400

[bettinoesp]

Ho seguito la procedura per la decompressione ma al punto 11 mi da l'errore:
root@alice:/# scanimage -L
scanimage: error while loading shared libraries: libsane.so.1: wrong ELF class: ELFCLASS32

la procedura era:
1.Login as root user.
2.Create a new folder as “scanner” on the desktop.
3.Copy the 2400rv.tar.gz to the “scanner” folder.
4.Open the scanner folder, right click the 2400rv.tar.gz and choose Extract and select Extract Here.
5.A Folder will be created as 2400rv.
6.Go to the Konsole Mode.
7.Type the command : cd /
8.Type the command : tar -xvzf /root/Desktop/scanner/2400rv/hp2400.tgz
9.Type the command : tar -xvzf /root/Desktop/scanner/2400rv/libsane.tgz
10.Power on the Scanner.

11.To check whether the scanner installed successfully by typing the command
scanimage -L