Hi,
On Wed, Aug 25, 2010 at 07:18:10AM -0500, JohnT wrote:
Why is imread failing and what should I do about it?
Feeding the error message into Google pointed me to (first hit)
http://octave.1599824.n4.nabble.com/Semaphore-assertion-failed-in-graphicsmagick-td1674295.html
and from there to
https://www-old.cae.wisc.edu/pipermail/octave-maintainers/2010-January/014891.html
So, what version of GraphicsMagick do you have installed? If it's>
1.3.8, you might want to apply
http://patch-tracker.debian.org/patch/series/view/octave3.2/3.2.4-6/handle_new_graphicsmagic
to your Octave sources.