Minecraft 1.6.4 ne se lance plus

Au secours !!!
Depuis maintenant quelques minutes, je ne peux plus lancer Minecraft :
le lanceur démarre, j'appuie sur Play, mais rien ne se passe ! Le jeu ne s'ouvre pas.
Au début, j'ai pensé que c'était Java qui avait besoin d'être mis à jour, mais même l'opération effectuée n'a rien changé.
J'ai aussi téléchargé Minecraft.jar (d'habitude j'utilise le .exe), mais toujours rien.
J'ai donc modifié le profil dans le launcher pour faire en sorte qu'il ne se ferme pas au lancement du jeu, et j'ai récupéré le code suivant après le clic sur le bouton :

[10:03:27 INFO]: Getting syncinfo for selected version
[10:03:27 INFO]: Queueing library & version downloads
[10:03:27 INFO]: Download job 'Version & Libraries' started (16 threads, 22 files)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\[/contents/1282-les-modes-de-fonctionnement-du-wifi-802-11-ou-wi-fi Roaming]\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.8\launchwrapper-1.8.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar for job 'Version & Libraries'... (try 0)
[10:03:27 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar for job 'Version & Libraries'... (try 0)
[10:03:29 INFO]: Download job 'Resources' skipped as there are no files to download
[10:03:29 INFO]: Job 'Resources' finished successfully (took 0:00:00.000)
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.0\lwjgl-platform-2.9.0-natives-windows.jar for job 'Version & Libraries'... (try 0)
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar for job 'Version & Libraries'... (try 0)
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries'... (try 0)
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries'... (try 0)
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries'... (try 0)
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Attempting to download C:\Users\Thomas\AppData\Roaming\.minecraft\versions\1.6.4-\1.6.4-.jar for job 'Version & Libraries'... (try 0)
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.0\lwjgl-platform-2.9.0-natives-windows.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.8\launchwrapper-1.8.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries': Local file matches local checksum, using that
[10:03:29 INFO]: Finished downloading C:\Users\Thomas\AppData\Roaming\.minecraft\versions\1.6.4-\1.6.4-.jar for job 'Version & Libraries': Couldn't connect to server (responded with 403) but have local file, assuming it's good
[10:03:29 INFO]: Job 'Version & Libraries' finished successfully (took 0:00:02.070)
[10:03:29 INFO]: Launching game
[10:03:29 INFO]: Unpacking natives to C:\Users\Thomas\AppData\Roaming\.minecraft\versions\1.6.4-\1.6.4--natives-13346876206193
[10:03:29 INFO]: Reconstructing virtual assets folder at C:\Users\Thomas\AppData\Roaming\.minecraft\assets\virtual\legacy
[10:03:29 INFO]: Launching in C:\Users\Thomas\AppData\Roaming\.minecraft
[10:03:29 INFO]: Half command: C:\Program Files\Java\jre8\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -Djava.library.path=C:\Users\Thomas\AppData\Roaming\.minecraft\versions\1.6.4-\1.6.4--natives-13346876206193 -cp C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\minecraftforge\minecraftforge\9.11.1.916\minecraftforge-9.11.1.916.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.8\launchwrapper-1.8.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.10.2\scala-library-2.10.2.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.10.2\scala-compiler-2.10.2.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\Thomas\AppData\Roaming\.minecraft\versions\1.6.4-\1.6.4-.jar net.minecraft.launchwrapper.Launch
[10:03:29 INFO]: Looking for orphaned versions to clean up...
[10:03:30 INFO]: Client> juil. 16, 2014 10:03:30 AM net.minecraft.launchwrapper.LogWrapper log
[10:03:30 INFO]: Client> INFOS: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[10:03:30 INFO]: Client> juil. 16, 2014 10:03:30 AM net.minecraft.launchwrapper.LogWrapper log
[10:03:30 INFO]: Client> INFOS: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[10:03:30 INFO]: Client> juil. 16, 2014 10:03:30 AM net.minecraft.launchwrapper.LogWrapper log
[10:03:30 INFO]: Client> INFOS: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[10:03:30 INFO]: Game ended with no troubles detected (exit code 0)
[10:03:30 INFO]: Looking for old natives & assets to clean up...
[10:03:31 INFO]: Deleting C:\Users\Thomas\AppData\Roaming\.minecraft\versions\1.6.4-\1.6.4--natives-13346876206193

Petite précision : j'ai essayé avec un autre profil que celui moddé (Pipix) et ça marche très bien.
Je ne sais pas si cela est important, mais les mods installés sont :
_Zan's Minimap,
_Too Many Items,
_ComputerCraft,
_Backpack,
_CustomNPC,
_GunCus et
_Picture in Picture (et donc iChun).

S'il-vous-plaît, aidez-moi !
Je suis désespéré.

Merci d'avance














C'est bon, le problème est réglé, j'ai supprimé un petit peu tous les fichiers inutiles qui prenaient de la place pour rien (comme les logs/crash_reports).