Thread:Project:Support desk/Error creating thumbnail Error code: -1

Error creating thumbnail Error code: -1

Some images say Error creating thumbnail Error code: -1. Not display that error in all images, but some display that error or is too late to create thumbnail. Version is like this: MediaWiki : 1.24.2 PHP : 5.4.39 (apache) MySQL : 5.0.45-log ImageMagick : 6.9.1-1