I've just uploaded RMagick 1.15.8. This release includes a fix for a bug 
in Image#composite. If both a gravity argument and x- and y-offsets are 
specified the composite image is positioned incorrectly. This fix also 
affects the blend, crop, displace, dissolve, and watermark methods. 
Thanks to Benoit Larroque for reporting this problem.

This release also fixes two documentation bugs. Thanks to Ezra Freedman 
and Thomas R. Koll for the bug reports.

RMagick is available as always from RubyForge: 
http://rubyforge.org/projects/rmagick/. The RMagick home page is 
http://rmagick.rubyforge.org. The RMagick installation FAQ is at 
http://rmagick.rubyforge.org/install-faq.html.

Please wait a few hours so the new release can make it out to all the 
mirrors.

RMagick is an interface to the ImageMagick (www.imagemagick.org) and 
GraphicsMagick (www.graphicsmagick.org) image processing libraries. 
RMagick supports more than 90 image formats, including GIF, JPEG, and 
PNG.  RMagick comes with comprehensive HTML documentation.

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RMagick OS X Installer [http://rubyforge.org/projects/rmagick/]
RMagick Hints & Tips [http://rubyforge.org/forum/forum.php?forum_id=1618]
RMagick Installation FAQ [http://rmagick.rubyforge.org/install-faq.html]