gmobilemedia crashed with ERR_DEVICENOPERMISSION in Connect(): {'Text': u"Errore durante l'apertura del dispositivo, non hai i permessi.", 'Code': 6, 'Where': 'Init'}

gMobileMedia crashes when trying to find the cell phone (connected via USB)

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: gmobilemedia 0.4+dfsg-13build1
ProcVersionSignature: Ubuntu 3.2.0-20.32-generic-pae 3.2.12
Uname: Linux 3.2.0-20-generic-pae i686
ApportVersion: 1.95-0ubuntu1
Architecture: i386
CrashCounter: 1
Date: Mon Mar 26 18:12:16 2012
ExecutablePath: /usr/bin/gmobilemedia
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120316)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/gmobilemedia
PythonArgs: ['/usr/bin/gmobilemedia']
SourcePackage: gmobilemedia
Title: gmobilemedia crashed with ERR_DEVICENOPERMISSION in Connect(): {'Text': u"Errore durante l'apertura del dispositivo, non hai i permessi.", 'Code': 6, 'Where': 'Init'}
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo