Hmm, no good. I downloaded the master mw:

git clone --depth 1 https://gerrit.wikimedia.org/r/p/mediawiki/core.git

after that I followed the installation manual of Wikibase repository. The only interesting thing that have happened is when I run

$ php extensions/Wikibase/lib/maintenance/populateSitesTable.php

I got the following message :

Got no data from https://meta.wikimedia.org/w/api.php?action=sitematrix&format=json

done.

After that I got pretty much the same error when I tried to go to the page Item:q1 :

Unexpected non-MediaWiki exception encountered, of type "InvalidArgumentException"

[089fe8f4] /wikibase/index.php/Item:q1 Exception from line 48 of /var/www/html/wikibase/extensions/Wikibase/repo/includes/GenericEventDispatcher.php: $listener must implement Wikibase\Lib\Store\EntityStoreWatcher

Backtrace:

#0 /var/www/html/wikibase/extensions/Wikibase/repo/includes/store/sql/SqlStore.php(549): Wikibase\Repo\GenericEventDispatcher->registerWatcher(Wikibase\Lib\Store\CachingEntityRevisionLookup)

#1 /var/www/html/wikibase/extensions/Wikibase/repo/includes/store/sql/SqlStore.php(513): Wikibase\SqlStore->newEntityRevisionLookup()

#2 /var/www/html/wikibase/extensions/Wikibase/repo/includes/store/sql/SqlStore.php(455): Wikibase\SqlStore->getEntityRevisionLookup(string)

#3 /var/www/html/wikibase/extensions/Wikibase/repo/includes/WikibaseRepo.php(316): Wikibase\SqlStore->getEntityLookup(string)

#4 /var/www/html/wikibase/extensions/Wikibase/repo/includes/WikibaseRepo.php(488): Wikibase\Repo\WikibaseRepo->getEntityLookup()

#5 /var/www/html/wikibase/extensions/Wikibase/repo/includes/WikibaseRepo.php(705): Wikibase\Repo\WikibaseRepo->getValueFormatterBuilders()

#6 /var/www/html/wikibase/extensions/Wikibase/repo/includes/WikibaseRepo.php(672): Wikibase\Repo\WikibaseRepo->getMessageParameterFormatter()

#7 /var/www/html/wikibase/extensions/Wikibase/repo/Wikibase.hooks.php(1244): Wikibase\Repo\WikibaseRepo->getValidatorErrorLocalizer()

#8 /var/www/html/wikibase/extensions/Wikibase/repo/Wikibase.hooks.php(1226): Wikibase\RepoHooks::newItemHandler()

#9 [internal function]: Wikibase\RepoHooks::onContentHandlerForModelID(string, NULL)

#10 /var/www/html/wikibase/includes/Hooks.php(206): call_user_func_array(string, array)

#11 /var/www/html/wikibase/includes/GlobalFunctions.php(4056): Hooks::run(string, array, NULL)

#12 /var/www/html/wikibase/includes/content/ContentHandler.php(321): wfRunHooks(string, array)

#13 /var/www/html/wikibase/includes/page/WikiPage.php(222): ContentHandler::getForModelID(string)

#14 /var/www/html/wikibase/includes/page/WikiPage.php(208): WikiPage->getContentHandler()

#15 /var/www/html/wikibase/includes/actions/Action.php(92): WikiPage->getActionOverrides()

#16 /var/www/html/wikibase/includes/actions/Action.php(145): Action::factory(string, WikiPage, RequestContext)

#17 /var/www/html/wikibase/includes/Wiki.php(154): Action::getActionName(RequestContext)

#18 /var/www/html/wikibase/includes/Wiki.php(527): MediaWiki->getAction()

#19 /var/www/html/wikibase/includes/Wiki.php(452): MediaWiki->main()

#20 /var/www/html/wikibase/index.php(46): MediaWiki->run()

#21 {main}

I did't modify Wikibase.example.php file so my items should be in the Item namespace.

I use PHP 5.3.3, Apache server Apache/2.2.15

mysql 5.1.73,

RedHat Linux 6.5 (Santiago)

-----
Yury Katkov

On Sun, Jun 22, 2014 at 5:23 PM, Yury Katkov <katkov.juriy@gmail.com> wrote:

Thanks guys, I'll try it on master MW.

-----
Yury Katkov

On Sat, Jun 21, 2014 at 5:48 PM, Lydia Pintscher <lydia.pintscher@wikimedia.de> wrote:

On Sat, Jun 21, 2014 at 5:26 PM, Jeroen De Dauw <jeroendedauw@gmail.com> wrote:
> Hey,
>
> I don't know about this particular error, though can say Wikibase is no
> longer compatible with MediaWiki 1.23. Unfortunately retaining compatibility
> with a stable MediaWiki version, and third party support in general, does
> not appear to be high on the priority list of the Wikidata team. So I can
> only recommend against third parities using the software in serious contexts
> for now.

Yes we do require master of MediaWiki at the moment. My plan was to
change this with MediaWiki 1.23. This didn't work out for various
reasons. We will make an effort for 1.24. Wikibase is still changing a
lot and people who want to use it for other purposes should be aware
of that.

Cheers
Lydia

--
Lydia Pintscher - http://about.me/lydia.pintscher
Product Manager for Wikidata

Wikimedia Deutschland e.V.
Tempelhofer Ufer 23-24
10963 Berlin
www.wikimedia.de

Wikimedia Deutschland - Gesellschaft zur Förderung Freien Wissens e. V.

Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg
unter der Nummer 23855 Nz. Als gemeinnützig anerkannt durch das
Finanzamt für Körperschaften I Berlin, Steuernummer 27/681/51985.

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