veewee kvm export doesn't export for kvm

[ghost]

Hi!

I'm trying use vagrant with kvm provider. For this, i'm using veewee to create and export a box. When I running the command:

veewee kvm export Ubuntu12

It return a successful menssage. But when i try add the box for vagrant use a kvm provider. I got the message:

$ vagrant up
Bringing machine 'default' up with 'kvm' provider...
==> default: Box 'Ubuntu12' could not be found. Attempting to find and install...
default: Box Provider: kvm
default: Box Version: >= 0
==> default: Adding box 'Ubuntu12' (v0) for provider: kvm
default: Downloading: file:///home/helvio/veewee/Ubuntu12/Ubuntu12.box
The box you attempted to add doesn't match the provider you specified.

Provider expected: kvm
Provider of box: libvirt

Anyone has a suggestion for my problem?