Another "Could not commit changes" error

I'm trying to upgrade to Ubuntu 7.10 from 7.04
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Get "could not commit..." in adept Mgr, the only pkg mgr I have in system settings.
In terminal, I execute: sudo dpkg --configure -a && sudo apt-get -f install
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I receive:

Setting up phpgroupware (0.9.16.011-3) ...
setting up apache
setting up apache-ssl
setting up apache-perl
setting up apache2
/usr/share/wwwconfig-common/pgsql.get: line 77: psql: command not found
/usr/share/wwwconfig-common/pgsql.get: line 77: psql: command not found
dpkg: error processing phpgroupware (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 phpgroupware
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I removed phpgroupware, repeated above, reinstalled phpgroupware.
Full upgrade is still not available in Adept Mgr
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Thanks for your advice, Joseph