when updating from mediawiki 1.44 to 1.53 i got errors whithin table "image"
the fields: img_width, img_height, img_bits, mg_media_type, img_major_mime and img_minor_mime dit not get computed.
as a result on special-page "Gallery of new files" and on the imagepage itself the images dont get displayed. whithin an article everthing is ok.
Heinz