Rt at a glance issue after 3.4.5 to 3.6.6 upgrade

Hello,

We’ve just upgraded from 3.4.5 to 3.6.6 on OS X. Upgrade appeared to
go smoothly, but when trying to run the upgrade scripts for the 3.5.1
schema as told the following messages occur:

dev:~ root# /opt/rt3/sbin/rt-setup-database --dba root --prompt-for-
dba-password --action schema --datadir etc/upgrade/3.5.1
In order to create or update your RT database,this script needs to
connect to your mysql instance on localhost as root.
Please specify that user’s database password below. If the user has
no database
password, just press return.

Password:
Creating database schema.
Couldn’t find schema file for mysql
dev:~ root#

Looking in RT_Config it only has:

Set($HomepageComponents, [qw(QuickCreate Quicksearch MyAdminQueues
MySupportQueues MyReminders RefreshHomepage)]);

and these are the only options that appear when the Edit button is
clicked to customise the RT at a glance page.

I am logged in with superuser privs, and searches show many tickets
assigned to the user name.

Does anyone have any idea what could have gone wrong or what we are
missing?

Thanks
Rob