I've just installed proxmox and tried several container images. None of them will start on either of the two of my clustered servers.
Here is the error I get.
root@kvm2:~# lxc-start -n 103 -F -l DEBUG -o /tmp/lxc.log
lxc-start: 103: conf.c: run_buffer: 323 Script exited with status 255...