How do I fix ImageMagick install error on MacPorts?

I've been trying to install ImageMagick through MacPorts with no lu开发者_开发问答ck. After running sudo port install ImageMagick, I get the following error:

Computing dependencies for ImageMagickError: Unable to execute port: invalid command name "supported_archs"

I'm running Mac OSX 10.5 with the latest version of MacPorts. Anyone able to shed some light on this error?

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Fixed issue by running port selfupdate through MacPorts and confirming latest version.