I am experiencing problems when extracting the 2.0.1 binaries from Sourceforge.
I have tried both the tarball and the zip:
$ tar -xvf liquibase-2.0.1-bin.tar
x liquibase.jar: Truncated tar archive
tar: Error exit delayed from previous errors.
$ unzip liquibase-2.0.1-bin.zip
Archive: liquibase-2.0.1-bin.zip
End-of-central-directory signature not found. Either this file is not
a zipfile, or it constitutes one disk of a multi-part archive. In the
latter case the central directory and zipfile comment will be found on
the last disk(s) of this archive.
unzip: cannot find zipfile directory in one of liquibase-2.0.1-bin.zip or
liquibase-2.0.1-bin.zip.zip, and cannot find liquibase-2.0.1-bin.zip.ZIP, period.