Issue upgrading to V5

I have been running successfully V4.5.7 on a SUSE V13.2 VM with postgresql and tried to upgrade to V5.0.3 but could not get past the 'Upgrade in progress' screen. I decided to start from scratch so I deleted the projeqtor database, deleted the installation (all below /srv/www) and tried again, but with the same issue.

I followed the same procedure but this time installed V4.5.7 which worked OK; I logged in, created a user and created a project. I then tried upgrading to V5.0.0 but again got stuck at the 'Upgrade in progress' screen. Everything looked good in the log files until the message:

2015-07-15 23:12:02.671 ***** ERROR ***** Exception-[42703] SQLSTATE[42703]: Undefined column: 7 ERROR: column message.showonlogin does not exist
LINE 1: select * from message where message.showOnLogin='1' and mess...
^
2015-07-15 23:12:02.677 ***** ERROR ***** For query : select * from message where message.showOnLogin='1' and message.idle=0
2015-07-15 23:12:02.738 ***** ERROR ***** Strack trace :
2015-07-15 23:12:02.859 ***** ERROR ***** #0 Sql->query called at [/srv/www/projeqtor/model/persistence/SqlElement.php:1578]
2015-07-15 23:12:02.940 ***** ERROR ***** #1 SqlElement->getSqlElementsFromCriteria called at [/srv/www/projeqtor/view/login.php:38]
2015-07-15 23:12:02.971 ***** ERROR ***** #2 include called at [/srv/www/projeqtor/tool/projeqtor.php:170]
2015-07-15 23:12:02.000 ***** ERROR ***** #3 require_once called at [/srv/www/projeqtor/view/main.php:37]

Please could you point me in the correct direction to fix this?

I have some more information. I have a test environment on my laptop using EasyPHP which includes mysql database. In the attachment messages_mysql.png you can see the structure of the table messages (using PhpMyAdmin) and there are 9 columns.



However, in the attachment messages_pgsql.png (using pgAdmin III) you can see the structure of the table messages in the production server which uses postgres. There are only 8 columns and the showOnLogin column is missing.



Obviously I can easily add the column but my questions are:

1. Why the difference?
2. How do I know that there are no other issues as the database upgrade obviously didn't work properly?

I have some more information. I have a test environment on my laptop using EasyPHP which includes mysql database. In the attachment messages_mysql.png you can see the structure of the table messages (using PhpMyAdmin) and there are 9 columns.



However, in the attachment messages_pgsql.png (using pgAdmin III) you can see the structure of the table messages in the production server which uses postgres. There are only 8 columns and the showOnLogin column is missing.



Obviously I can easily add the column but my questions are:

1. Why the difference?
2. How do I know that there are no other issues as the database upgrade obviously didn't work properly?

You are correct; the dbVersion is 4.5.6.
openSUSE 13.2 (Harlequin) (x86_64)
psql (9.3.6)
PHP 5.6.1

I have already tried clearing browser cookies etc.