i have similar issues with my suse 10 oss edition system. klik worked great for a while, but after upgrading my system, from the stable sources even, klik dies with the same error message, cannot mount /tmp/app/1.
i tried mounting manually, but got this

mount: could not find any device /dev/loop#

which confuses me.

anyway, it's a tribute to how great a system klik is when i end up losing most of my apps when it breaks...