evolution does not start from the launcher

I install evolution, run it from a terminal, lock its icon on the launcher, close evolution and run it again from the launcher: the icon starts flashing as the program is starting, but, after a few seconds it stops flashing and evolution does NOT start.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: evolution 3.4.2-1ubuntu2
ProcVersionSignature: Ubuntu 3.4.0-3.8-generic 3.4.0
Uname: Linux 3.4.0-3-generic i686
ApportVersion: 2.1.1-0ubuntu2
Architecture: i386
CasperVersion: 1.317
Date: Sat Jun 2 19:36:12 2012
LiveMediaBuild: Edubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120602)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: evolution
UpgradeStatus: No upgrade log present (probably fresh install)