So it looks like convert has some configuration files, that didn't get pulled into the package, and in some cases will cause ImageMagick to fail? It's weird because I've done a lot of thumbnailing since convert was added to MediaWiki, including other PNGs, and this just happened for the first time.
Error creating thumbnail: convert: UnableToOpenConfigureFile delegates.xml' @ warning/configure.c/GetConfigureOptions/712. convert: NoDecodeDelegateForThisImageFormat PNG' @ error/constitute.c/ReadImage/560. convert: NoImagesDefined /tmp/transform_ee3584461f78.png' @ error/convert.c/ConvertImageCommand/3258. Error code: 1
So it looks like convert has some configuration files, that didn't get pulled into the package, and in some cases will cause ImageMagick to fail? It's weird because I've done a lot of thumbnailing since convert was added to MediaWiki, including other PNGs, and this just happened for the first time.