En fait j'ai la version 1.6.48 et ça ne marche pas ...Ca me met :
Completely ignored arguments: [--nativeLauncherVersion, 286]
[14:37:44] [Client thread/INFO]: Setting user: Player
[14:37:44] [Client thread/INFO]: (Session ID is token:64d0fff9774a4923a3b16a3aa8cedaa0:00000000-0000-0000-0000-000000000000)
[14:37:47] [Client thread/INFO]: LWJGL Version: 2.9.4
[14:37:48] [Client thread/INFO]: Reloading ResourceManager: Default
[14:37:48] [Sound Library Loader/INFO]: Starting up SoundSystem...
[14:37:49] [Thread-6/INFO]: Initializing LWJGL OpenAL
[14:37:49] [Thread-6/INFO]: (The LWJGL binding of OpenAL. For more information, see
http://www.lwjgl.org)
[14:37:49] [Thread-6/INFO]: OpenAL initialized.
[14:37:49] [Sound Library Loader/INFO]: Sound engine started
[14:37:59] [Client thread/INFO]: Created: 512x512 textures-atlas
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x27a93e88, pid=5788, tid=5800
#
# JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)
# Java VM: Java HotSpot(TM) Client VM (25.25-b02 mixed mode windows-x86 )
# Problematic frame:
# C [ig4dev32.dll+0x3e88]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\Users\ahmed\AppData\Roaming\.minecraft\hs_err_pid5788.log
#
# If you would like to submit a bug report, please visit:
#
http://bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
AL lib: (EE) alc_cleanup: 1 device not closed
Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release