installing on mac

We are trying to install Imagemagick on our Mac Laptop but keep getting an install error. I posted on the Imagemagick forums but they are saying it's a macports error. Any ideas?? ---> Verifying checksum(s) for bzip2 Error: Checksum (md5) mismatch for bzip2-1.0.4.tar.gz Error: Checksum (sha1) mismatch for bzip2-1.0.4.tar.gz Error: Checksum (rmd160) mismatch for bzip2-1.0.4.tar.gz Error: Target org.macports.checksum returned: Unable to verify file checksums Error: The following dependencies failed to build: bzip2 expat fontconfig freetype zlib jpeg libiconv libpng libxml2 pkgconfig tiff Error: Status 1 encountered during processing.