rpm2cpio error "Error: header not recognized" reading red hat rpm

Hi,
Having an issue on my solaris servers (x86) trying to read a red hat rpm with rpm2cpio

-bash-3.2# rpm2cpio crontabs-1.10-32.1.el6.noarch.rpm | cpio -itv
Error: header not recognized
cpio: Can't read input:  end of file encountered prior to expected end of archive.

1 errors
-bash-3.2# rpm2cpio crontabs-1.10-32.1.el6.noarch.rpm > mh.cpio
Error: header not recognized

Doesn't matter which rpm I try. I can read them on a red hat box, so the rpms themselves are ok.

Version of OS is 5.10 Generic_147441-01 i86pc i386 i86pc

Any help would be appreciated.

Thanks