"Error: Protected multilib versions:" with mock

[Richard Shaw]

I'm trying to see if the updated libcrystalhd packages fix a build
problem I'm having with another package but when I try to install the
updated packages into the mock chroot (one's I've built or these from
-testing) I get the following error:

$ mock -r fedora-17-x86_64 --resultdir=./mockbuild/17/mythtv/
--install http://kojipkgs.fedoraproject.org//packages/libcrystalhd/3.10.0/2.fc17/x86_64/libcrystalhd-3.10.0-2.fc17.x86_64.rpm
http://kojipkgs.fedoraproject.org//packages/libcrystalhd/3.10.0/2.fc17/x86_64/libcrystalhd-devel-3.10.0-2.fc17.x86_64.rpm
INFO: mock.py version 1.1.21 starting...
State Changed: init plugins
INFO: selinux enabled
State Changed: start
Mock Version: 1.1.21
INFO: Mock Version: 1.1.21
State Changed: lock buildroot
INFO: installing package(s):
http://kojipkgs.fedoraproject.org//packages/libcrystalhd/3.10.0/2.fc17/x86_64/libcrystalhd-3.10.0-2.fc17.x86_64.rpm
http://kojipkgs.fedoraproject.org//packages/libcrystalhd/3.10.0/2.fc17/x86_64/libcrystalhd-devel-3.10.0-2.fc17.x86_64.rpm
ERROR: Command failed:
 # ['/usr/bin/yum', '--installroot',
'/var/lib/mock/fedora-17-x86_64/root/', 'install',
'http://kojipkgs.fedoraproject.org//packages/libcrystalhd/3.10.0/2.fc17/x86_64/libcrystalhd-3.10.0-2.fc17.x86_64.rpm',
'http://kojipkgs.fedoraproject.org//packages/libcrystalhd/3.10.0/2.fc17/x86_64/libcrystalhd-devel-3.10.0-2.fc17.x86_64.rpm',
'--setopt=tsflags=nocontexts']
Error: Protected multilib versions: libcrystalhd-3.5.1-1.fc14.i686 !=
libcrystalhd-3.10.0-2.fc17.x86_64

This is after a --scrub=all and --init...

Ideas?

Thanks,
Richard