[Mediawiki-l] update.php error when upgrading to 1.11.0 - table already exists

[Adam Nielsen]

Hi all,

I'm trying to upgrade my wiki from MW1.8.2 to 1.11.0, but the upgrade 
script bombs out with an error, telling me one of the database tables 
already exists.  Am I doing something wrong?  I thought the table 
would've been ignored/upgraded if it already existed.

$ php update.php
MediaWiki 1.11.0 Updater

Going to run database updates for testupgrade
Depending on the size of your database this may take a while!
Abort with control-c in the next five seconds...0
...hitcounter table already exists.
...querycache table already exists.
...objectcache table already exists.
...categorylinks table already exists.
...logging table already exists.
...user_newtalk table already exists.
...transcache table already exists.
...trackbacks table already exists.
Creating externallinks table...Query "CREATE TABLE `externallinks` (
  el_from int(8) unsigned NOT NULL default '0',
  el_to blob NOT NULL,
  el_index blob NOT NULL,
  KEY (el_from, el_to(40)),
  KEY (el_to(60), el_from),
  KEY (el_index(60))
  ) TYPE=InnoDB
" failed with error code "Table 'externallinks' already exists (localhost)".

Thanks,
Adam.