Problem with Z-Push install

[Mike Brady]

I have a Kolab 2.2.4 installation installed from the source RPMs on Centos 5.5 
x86_64.  Limited testing with Kontact and Horde clients indicted that 
everything seemed to be working.

As per the instructions in the "Install Z-Push with RPMS" section on the Wiki 
I then installed 
kolab-webclient-1.2.0-20100625+activesync3.noarch-debian5.0-kolab.rpm
kolab-z-push-0.7.3-1.ix86-debian5.0-kolab.rpm
PEAR-Kolab_Zpush-0.1.2-1.ix86-debian5.0-kolab.rpm
z-push-1.5-0.1.beta2.noarch-debian5.0-kolab.rpm

Attempting to browse to  http://kolab.example.com/Microsoft-Server-ActiveSync 
(substituting my host name of course) got a no such page response from the 
server.  The Horde client login also no longer works giving an HTTP Error 500. 
The /kolab/var/kolab/www/z-push/config.php file does not exist.  kolabconf just 
goes into a loop producing the following in /var/log/messages

Jan 23 10:48:22 kolab02 kolabconf[21096]: T Warning: No configuration variable 
corresponding to `webserver_musr' exists 
Jan 23 10:48:53 kolab02 last message repeated 291525 times
Jan 23 10:49:54 kolab02 last message repeated 589723 times
Jan 23 10:50:55 kolab02 last message repeated 600999 times
Jan 23 10:51:56 kolab02 last message repeated 611097 times
Jan 23 10:52:56 kolab02 last message repeated 596695 times
Jan 23 10:53:58 kolab02 last message repeated 646973 times
Jan 23 10:54:59 kolab02 last message repeated 629354 times
Jan 23 10:55:59 kolab02 last message repeated 568786 times
Jan 23 10:57:00 kolab02 last message repeated 657696 times
Jan 23 10:58:01 kolab02 last message repeated 639620 times
Jan 23 10:59:02 kolab02 last message repeated 650432 times
Jan 23 11:00:04 kolab02 last message repeated 637817 times
Jan 23 11:00:20 kolab02 last message repeated 180239 times

until I aborted it and /kolab/var/kolab/www/z-push/config.php is not created.

The only occurrance I can find of 'webserver_musr' is in 
/kolab/etc/kolab/templates/zpush-config.php.template.

Can some one advise on what I should be looking at next please?

Thanks

Mike