Unable to add users, groups, or other entities from web admin

[Eric B Munson]

Hi,

I followed the online docs for installing kolab-3.0 on a fresh debian 
wheezy install.  I was able to add my first user and make that user a 
kolab-admin.  As I was poking around the roundcube interface, I tried to 
change the password for my user and this seemed to fail (after I click 
save I get a blank page and I have to use my old password to login to 
roundcube).  Also, now I cannot edit this users information or add new 
users/groups/other entities from the kolab-webadmin interface, even when 
logged in as Directory Manager.  I cannot seem to find anything 
complaining in the logs except this:

[23-Mar-2013 17:22:56 UTC] PHP Warning:  require_once(Net/LDAP2.php): 
failed to open stream: No such file or directory in 
/usr/share/kolab-webadmin/lib/ext/Net/LDAP3.php on line 1712
[23-Mar-2013 17:22:56 UTC] PHP Fatal error:  require_once(): Failed 
opening required 'Net/LDAP2.php' 
(include_path='/usr/share/kolab-webadmin/lib:/usr/share/kolab-webadmin/lib/client:/usr/share/kolab-webadmin/lib/api:/usr/share/kolab-webadmin/lib/ext:.:/usr/share/php:/usr/share/pear') 
in /usr/share/kolab-webadmin/lib/ext/Net/LDAP3.php on line 1712
[23-Mar-2013 13:22:56 -0400](-removed-): PHP Error: API Error: Unable 
to decode response (POST)

What have I broken and where can I look for how to fix it?

Thanks,
Eric