System settings crashes on sound config

[Carlos Suárez]

From a fresh installation, trying to change sound system, it crashes when selected new sound.

ProblemType: Bug
DistroRelease: elementary OS 0.3
Package: elementary-desktop 1.361+405~ubuntu0.3.1 [origin: unknown]
ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13
Uname: Linux 3.13.0-45-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CrashDB: elementary_meta
CurrentDesktop: Pantheon
Date: Sat Apr 4 13:39:22 2015
InstallationDate: Installed on 2015-04-03 (0 days ago)
InstallationMedia: elementary OS 0.3 "Freya" - Daily amd64 (20150208)
ProcEnviron:
 LANGUAGE=es
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
SourcePackage: elementary-meta
SuspiciousXErrors:

ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)