Error

Error (ERROR_MISSING_OBJECT) : Parent 135 path DSCF9952_song_sparrow_sm.jpg

in modules/core/classes/helpers/GalleryFileSystemEntityHelper_simple.class at line 119 (GalleryCoreApi::error)
in modules/core/classes/GalleryCoreApi.class at line 1942 (GalleryFileSystemEntityHelper_simple::fetchChildIdByPathComponent)
in modules/core/classes/helpers/GalleryFileSystemEntityHelper_simple.class at line 64 (GalleryCoreApi::fetchChildIdByPathComponent)
in modules/core/classes/GalleryCoreApi.class at line 1885 (GalleryFileSystemEntityHelper_simple::fetchItemIdByPath)
in modules/rewrite/classes/RewriteSimpleHelper.class at line 50 (GalleryCoreApi::fetchItemIdByPath)
in ??? at line 0 (RewriteSimpleHelper::loadItemIdFromPath)
in modules/rewrite/classes/RewriteUrlGenerator.class at line 98
in modules/rewrite/classes/parsers/modrewrite/ModRewriteUrlGenerator.class at line 50 (RewriteUrlGenerator::_onLoad)
in init.inc at line 113 (ModRewriteUrlGenerator::init)
in main.php at line 73