Movable Type Knowledge Base: 500 Error When Thumbnailing Images

Question

When I try to create a thumbnail for an uploaded image, I get a 500 error.

Answer

Generally, the reason for an Internal Server Error when thumbnailing is a problem with the Image::Magick Perl module or the ImageMagick binaries themselves.

Movable Type, when thumbnailing, requires the use of not only the ImageMagick libraries, but the Perl module used to interact with those libraries: Image::Magick, also known as PerlMagick.

If there is a problem, generally it is because one of these is missing or incorrectly/incompletely installed. Another thing to check is that the version of the PerlMagick distribution corresponds to the ImageMagick distribution (e.g. PerlMagick 6.2.2 for ImageMagick 6.2.2).

If you are unable to get ImageMagick or the associated Perl module working correctly, see My Host Doesn't Have Image::Magick for an alternative.

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