Imported backup DB Error

[jed_keenan]

I've imported a backup of a 4.3 to a new database on a new installation of Joomla 2.5.22 and CiviCRM 4.4.6. Its all fine but on creating a new entry, which is fine, I get a 'Sorry but we are not able to provide this at the moment. DB Error: no such table. Return to home page.
When I go to edit the entry its fine but when I select view its is the same DB Error and when I select delete there is this error message:
Warning: Cannot modify header information - headers already sent by (output started at /home/bsubooks/public_html/elit365/libraries/joomla/cache/controller/page.php:199) in /home/bsubooks/public_html/elit365/administrator/components/com_civicrm/civicrm/CRM/Utils/System.php on line 361
I can't locate the civicrm dirctory /civicrm/CRM/Utils/System.php at all and page.php is only 199 line long.
Is there something I have missed doing or something I can do to rectify this issue?

[Chris Burgess]

Check that page.php doesn't have any content (including blank lines or spaces) after a closing php tag.

If a file has only PHP in it, just omit the closing ?> entirely and this won't happen.

(Delete line 199 of that file and things should work.)

[joanne]

I've imported a backup of a 4.3 to a new database on a new installation of Joomla 2.5.22 and CiviCRM 4.4.6.

If you really did what this says then I am surprised this works.  As far as I am aware, your backup and the DB you are importing to need to be the same version.

[Chris Burgess]

Going the other way would be trouble, but nothing wrong with importing a 4.3 db onto 4.4 code provided you run the upgrader ...

That would be the first step to trying out moist upgrades.