First thing I would check is: $wgMaxImageArea = ' some value '; See if it is accidentally explicitly set to a smaller value in LocalSettings as this will make thumbnailing fail. e.g. 400000 for 2000px X 2000px image would prevent thumbs on a 2200x1900 image which is 418000 in size or any combination widthxheight bigger than the max.
Take care Tom _______________________________________________ MediaWiki-l mailing list MediaWiki-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
