Can't create LXC container from template

Hi, when I try to create a new LXC container from a LXC template (not a provided system image), it fails with this error message :

Creating virtual system with LXC ..
.. creation failed : No template named found

Whatever template I try to use.

Which is nasty since I can't create a new image, defeating the purpose of Cloudmin :s

Also it won't allow me to setup a memory limit at container creation time, even with provided system images, it fails with this error :

Failed to create system : LXC host system does not support memory limits

This is wrong since I CAN set a limit after container creation.

Could you help please ?