[Koha] installation problem 2.2.6

[robin ros]

hi everyone,

(i speak spanish, i am sorry my english)

i want to install koha 2.2.6, but the system tellme that i donot have this
modules installed:
You are missing some Perl modules required by Koha. Please run this again
after installing them. They may be installed by finding packages from your
operating system supplier, or running (as root) the following commands:

perl -MCPAN -e 'install "ZOOM"'

perl -MCPAN -e 'install "You will need PDF::API2 for barcode generator"'

perl -MCPAN -e 'install "You will need GD::Barcode for the new barcode
generator"'

perl -MCPAN -e 'install "You will need PDF::Reuse::Barcode for the new
barcode generator"'


but i have installed all these modules of perl, cpan tellme this for all
that modules are up to date,

i have a debian sarge system, can anybody helpme,

thanks a lot,

robin
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