If you are seeing an error like this on Mac OS X lion -

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dyld: Library not loaded: /System/Library/Frameworks/OpenCL.framework/Versions/A/Libraries/libclparser.dylib

  Referenced from: /opt/local/bin/convert

  Reason: image not found

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You are missing this file "libclparser.dylib". You need to copy this file into this folder to fix the error. Thanks - http://apple.stackexchange.com/questions/21562/installing-imagemagick-leads-to-weird-error-involving-opencl