Thread:Project:Support desk/Upgrade from 1.15.2 to 1.23.0 with section errors

Hi, at first some facts of my environment: PHP 5.4.28, MySQL 5.1, i have no shell access.

I have upgraded my existing mediawiki 1.15.2 to the current version 1.23.0. I followed the instructions described at the manual. I performed the upgrade url e.g. http://mywiki.com/mw-config As a final step MediaWiki updated the database. Everything looks well. The last messages where: The upgrade is complete. The wiki can be used.

But the most of my wikipages only displayed the headline of the articles. The content is not available. At first I thought that all pages are affected. But occasionally there are pages that are displayed correctly as in the old wiki. When I try to edit a page whose content is not shown and then want to save an error message appears:

[a8b15f6a] 2014-06-14 04:44:51: Fatal exception of type MWException

Pages which are displayed correctly can be edited without errors. Then i tried to clear the cache of some damaged page by using the action=purge parameter. But it did not help.

Then I thought that the upgrade from version 1.15.2 to version 1.23.0 was too much. So i tried an upgrade to version 1.22.7. But it was the same result. At last i tried an upgrade to version 1.19.1. Most pages are still damaged. Only the headline is displayed. But when i edit those pages the error message is more significant:

'Cannot find section: You tried to edit a section that does not exist. It may have been moved or deleted while you were viewing the page.'

Some example URLs of my wiki:

A damaged page: http://barmwiki.datenuhr.de/index.php?title=Am_Markt

A normal page: http://barmwiki.datenuhr.de/index.php?title=Mittelalter_in_S%C3%BCdholstein:_800_-_1500

Does anyone can help to solve the problem. Regards

Jan