Thread:Project:Support desk/Mediawiki mysql and importDump restore failures from 1.6.6 to 1.17.0./reply

For the "php importDump.php backup.xml.gz" dies, reporting "PHP Fatal error: Call to a member function current on a non-object in /srv/www/htdocs/s/mw1165/includes/TitleArray.php on line 43" part of this (not commenting on the rest of it for now)

That's not a known issue (afaik). If possible you should open a bug, attaching a minimal example (aka just has the page that causes the error, since there's size limits on the upload size). Just because there's a post on mwusers doesn't mean people with the power to fix things will actually see it (And its really hard to fix that sort of thing without an example dump file that causes the error).