With apt-btrfs-snapshot, automatic updates in Unity fails

The "update software" app in unity fails after apt-btrfs-snapshot is installed. These are the messages it throws me

installArchives() failed: Supported
Create a snapshot of '/tmp/apt-btrfs-snapshot-mp-H_tvkK/@' in '/tmp/apt-btrfs-snapshot-mp-H_tvkK/@apt-snapshot-2013-06-06_16:16:27'
Supported
Create a snapshot of '/tmp/apt-btrfs-snapshot-mp-8fod35/@' in '/tmp/apt-btrfs-snapshot-mp-8fod35/@apt-snapshot-2013-06-06_16:16:28'
Supported
Create a snapshot of '/tmp/apt-btrfs-snapshot-mp-JJANmT/@' in '/tmp/apt-btrfs-snapshot-mp-JJANmT/@apt-snapshot-2013-06-06_16:16:28/@'
Supported

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: apt-btrfs-snapshot 0.2.1build1
ProcVersionSignature: Ubuntu 3.2.0-44.69-generic 3.2.44
Uname: Linux 3.2.0-44-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu17.2
Architecture: amd64
Date: Thu Jun 6 16:17:05 2013
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: apt-btrfs-snapshot
UpgradeStatus: No upgrade log present (probably fresh install)