Problem during upgrade to 2.2rc2 on Debian

[Alessio Cecchi]

During an upgrade to kolab 2.2-rc2 i have this problem:

mail:~/kolab22tmp# /kolab/bin/openpkg rpm -Uvh 
openpkg-20071227-20071227.ix86-debian4.0-kolab.rpm
Preparing...                ########################################### [100%]
        package openpkg-20071227-20071227 is intended for a debian4.0 
operating system
mail:~/kolab22tmp# cat /etc/debian_version
4.0
mail:~/kolab22tmp# uname -a
Linux mail 2.6.18-4-686 #1 SMP Wed May 9 23:03:12 UTC 2007 i686 GNU/Linux

Where is the problem?
Thanks
-- 
Alessio Cecchi is:
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