Thread: Assertion `image_info->signature == 0xabacadabUL' failed.
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Old 02-22-2011, 05:09 PM   #5
kovidgoyal
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You have some sort of library conflict on your system that is breaking ImageMagick.

I suggest running with

LD_DEBUG=libs and making sure that png.so and libpng are being loaded from /opt/calibre

And/or try the the calibre ebuild
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