Last modified: 2012-11-29 12:40:01 UTC
Create a new data item, then log in and try to delete the item again. It will give you a PHP fatal error: Class 'Wikibase\ItemDeletion' not found in C:\xampp\htdocs\mediawiki\extensions\Wikibase\repo\Wikibase.hooks.php on line 301
fixed in https://gerrit.wikimedia.org/r/#/c/19455/
fix was merged.
Verified in Wikidata demo time for sprint 12