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?

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