SELinux error with yum --installroot

[Bob Kashani]

When I run:

yum -y --installroot=/testroot groupinstall "Base"

I get all kinds of errors like this:

error: %post(libuser-0.52.5-1.i386) scriptlet failed, exit status 255
error: %post(gnupg-1.2.6-1.i386) scriptlet failed, exit status 255

If I turn selinux off there are no errors. Any ideas why this is
happening?

FC3 fully updated.

yum-2.1.12-0.fc3
libselinux-1.19.1-8
selinux-policy-targeted-1.17.30-2.58

Bob

-- 
Bob Kashani
http://www.ocf.berkeley.edu/~bobk/garnome