[magick-users] no decode delegate

[omicronpersei8 at imagemagick.org]

>  All directories and files under /usr/local/lib/ImageMagick* have read

Ok, type 

  ldd /usr/local/bin/convert
  ldd /usr/local/lib/ImageMagick*/modules/coders/tiff.so

See ildd complains abvaout missing libraries.