YUM GROUPLIST not working on SLES 11

I have a SLES 11 install with yum also installed. yum works when I try to install single packages.

However, when i try the yum command: "yum grouplist" yum can not detect any groups.

Is there some way to "enable" or install a grouplist feature in SLES 11 ?

==== details ====

SUSE Linux Enterprise Server 11 (x86_64)
VERSION = 11
PATCHLEVEL = 1
x86_64 2.6.32.43-0.4-default
MemTotal: 3928216 kB
run-level 5

# yum grouplist
Setting up Group Process
sds-sles-11-sp1-updates | 1.9 kB 00:00
sds-sles-11-sp1-pool | 1.8 kB 00:00
Error: No group data available for configured repositories

# ls -la /etc/yum.repos.d/*repo
-rw-r--r-- 1 root root 908 2012-03-01 15:45 /etc/yum.repos.d/sles-11.repo
-rw-r--r-- 1 root root 723 2012-03-01 17:01 /etc/yum.repos.d/sles-11-sp1.repo

# cat /etc/yum.repos.d/sles-11-sp1.repo
[sles-11-sp1-updates]
name=SuSE Linux Enterprise Server 11 SP1 - Updates
baseurl=http://xxxx.yyyy.zzzz.com/updates/suse/catalogs/SLES11-SP1-Updates/sle-11-$basearch/
ftp://uuuu:pppp@eeee.ffff.gggg.com/suse/catalogs/SLES11-SP1-Updates/sle-11-$basearch/
enabled=1

[sles-11-sp1-pool]
name=SuSE Linux Enterprise Server 11 SP1 - Pool
baseurl=http://xxxx.yyyy.zzzz.com/updates/suse/catalogs/SLES11-SP1-Pool/sle-11-$basearch/
ftp://uuuu:pppp@eeee.ffff.gggg.com/suse/catalogs/SLES11-SP1-Pool/sle-11-$basearch/
enabled=1