Kolab Installation fails

[Johannes Kehrer]

Hello,
I tried to install Kolab 2.3.2 in Debian 6.

The result of bootstrapping is:


kolab is now ready to run!
please run '/kolab/bin/openpkg rc all start'
Use login=manager and passwd=<passwd> when you log into
the webinterface https://kehrer.cc/admin !

When I try to start Kolab, I get the following messages:

root at vs0903:~# /kolab/bin/openpkg rc all start
OpenPKG: start: openpkg, openldap:FAILED
openpkg:rc:WARNING: /kolab:openldap:%start: failed with return code 1
openpkg:rc:NOTICE: no output occurred on stdout/stderr
OpenPKG: start: sasl, spamassassin, amavisd, apache:FAILED
openpkg:rc:WARNING: /kolab:apache:%start: failed with return code 1
openpkg:rc:NOTICE: output from stdout/stderr is following:
+----------------------------------------------------------------------
| [Thu Jul 14 21:10:53 2011] [warn] module php5_module is already 
loaded, skipping
| Syntax error on line 45 of /kolab/etc/apache/apache.conf:
| SSLCertificateFile: file '/kolab/etc/kolab/cert.pem' does not exist or 
is empty
+----------------------------------------------------------------------
OpenPKG: start: clamav, imapd, postfix, kolabd.
root at vs0903:~#

Any ideas?
If you need the full log of the bootstarpping I can send it, I just 
didn't want it in this email, because it is so long.

Thanks,
Johannes