Missing Class Item Sheet and Class Item Template Samples

Class Item Sheet and Class Item Template Samples are missing on XWiki Version 0.9.1005.
So when you're on bin/view/XWiki/XWikiClasses both links are tagged with question mark [?]

The trouble is when you create a new class, after definig properties, clicking both form buttons [Create the Document Sheet] [Create the Document Template] lead to a massive crash with exceptions.