Problems with upgrading

I'm running CentOS 4.3 and Zimbra 3.1. Everything was working well, and we were on the brink of going live, so I thought I would upgrade to 3.1.1... big mistake.

The upgrade was going as expected until:

Installing:
zimbra-core
zimbra-ldap
zimbra-logger
zimbra-mta
zimbra-snmp
zimbra-store
zimbra-apache
zimbra-spell

The system will be modified. Continue? [N] y

Shutting down zimbra mail

Removing existing packages

zimbra-mta...done
zimbra-core...done

Removing deployed webapp directories
Installing packages

zimbra-core......zimbra-core-3.1.1_GA_394.RHEL4-20060505121349.i386.rpm...FAILED
###ERROR###

zimbra-core-3.1.1_GA_394.RHEL4-20060505121349.i386.rpm installation failed

Installation cancelled

I tried ./install.sh -u and tried a complete re-install but when I start again I get:

Operations logged to /tmp/install.log.5914
Checking for existing installation...
zimbra-ldap...NOT FOUND
zimbra-logger...NOT FOUND
zimbra-mta...FOUND zimbra-mta-3.1.1_GA_394
zimbra-snmp...NOT FOUND
zimbra-store...NOT FOUND
zimbra-apache...NOT FOUND
zimbra-spell...NOT FOUND
zimbra-core...FOUND zimbra-core-3.1.1_GA_394

Saving existing configuration file to /opt/zimbra/.saveconfig
cp: cannot stat `/opt/zimbra/java/jre/lib/security/cacerts': No such file or directory

But zimbra-core and zimbra-mta are not installed, so I don't know how to get back to a working system without re-building the box?

I'm a bit desperate as the live date is looming and I'm worried that i'm going have problems when I come to upgrade the next time.

Thanks in advance

John

Well, I sort of answered this myself... actually found that zimbra-core and zimbra-mta rpm's weren't uninstalling themselves... (used rpm -qa | grep zimbra)
and then un-installed the packages and started again and that worked.

Has anybody had problems with rpm's not uninstalling when using the install script?

John

I've never had any problems with upgrades but some people have, in the past, had services not stop and then the install fails.