Based on the PNG extracted from the zip file, I am not seeing any problems with Q8 or Q16 builds of GraphicsMagick 1.3.19 and this file. What version of GraphicsMagick are you using? There are older versions which did corrupt such files when reading.
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It appears that both gm-1.4/Q16 and im-6.8.9-2/Q16 are converting the image correctly to a 48-bit RGB image, but "gm display/Q8" is showing them both wrong (stretched horizontally). "im display/Q8" shows them correctly. I'm using gm version 1.3.18(Q8) for displaying.
Last edit: Glenn Randers-Pehrson 2014-06-04
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Verified that a recent install of GM/Q8 display is showing the test image properly. The old versions that come with an up-to-date Ubuntu 14.04LTS do not work with the test image. It's GraphicsMagick 1.3.18 2013-03-10 Q8.
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The attached crlogo.png seems to be a PNG24 (8 bits per component)
gm-1.3.18 and gm-1.4 recent snapshot are not showing me any problems converting crlogo.png to png00:crlogo_00.png
Holy transformation, batman! Looks like sourceforge has modified the image, just downloaded the attachment and got a different file altogether.
Uploading inside zipfile to sidestep this nonsense.
Based on the PNG extracted from the zip file, I am not seeing any problems with Q8 or Q16 builds of GraphicsMagick 1.3.19 and this file. What version of GraphicsMagick are you using? There are older versions which did corrupt such files when reading.
It appears that both gm-1.4/Q16 and im-6.8.9-2/Q16 are converting the image correctly to a 48-bit RGB image, but "gm display/Q8" is showing them both wrong (stretched horizontally). "im display/Q8" shows them correctly. I'm using gm version 1.3.18(Q8) for displaying.
Last edit: Glenn Randers-Pehrson 2014-06-04
Verified that a recent install of GM/Q8 display is showing the test image properly. The old versions that come with an up-to-date Ubuntu 14.04LTS do not work with the test image. It's GraphicsMagick 1.3.18 2013-03-10 Q8.
Closing as invalid because the most recent version seems to work properly.
Confirmed, we are running a stock 1.3.18 here. I will see if we can install a 1.3.19 build on our servers. Thanks!