Error creating thumbnail: convert: Too many IDAT's found `/tmp/localcopy_33a1fcdb2046-1.png' @ error/png.c/MagickPNGErrorHandler/1309.
convert: corrupt image `/tmp/localcopy_33a1fcdb2046-1.png' @ error/png.c/ReadPNGImage/3294.
convert: missing an image filename `/tmp/transform_a6e2fcd7c404-1.png' @ error/convert.c/ConvertImageCommand/3011.
Works on my local machine (fedora 17) with ImageMagick 6.7.5-6 2012-08-11 Q16 but not on Toolserver's nightshade with ImageMagick 6.6.0-4 2012-05-02 Q16; the original PNG also renders fine for me within Firefox.
https://toolserver.org/~dispenser/temp/logs/cache_thumbs_errors.log gives 34 more examples, currently.
Version: unspecified
Severity: major
URL: https://upload.wikimedia.org/wikipedia/commons/thumb/e/e0/1khz_dither.png/180px-1khz_dither.png