Mon launcher ne marche pas

[Ephrodeon]

le soucis avec le launcher c'est que quand je suis en train de lancer le jeu cela me mais sur l'accueil du launcher 

pour m'aider voici les logs :

[B#349] Expected MD5: 94a9d4cbcb9ceaa25000fa303fa81acc Calculated MD5: 94a9d4cbcb9ceaa25000fa303fa81acc
[B#349] Expected MD5: b62087eb4b11746987c800c0512890ef Calculated MD5: b62087eb4b11746987c800c0512890ef
[B#349] Expected MD5: EBF34784444ABCB976F77C9E23692057 Calculated MD5: ebf34784444abcb976f77c9e23692057
[B#349] OS: windows 10
[B#349] Identified as windows
[B#349] Starting download of http://crafatar.com/avatars/52b79e979baf45759fe5e1d1ccef1e9e?size=100&helm, with 3 tries remaining
[B#349] Starting download of http://www.gravatar.com/avatar/4c9b9cd817e62d043070a821551c04f0?s=60&d=retro, with 3 tries remaining
[B#349] Starting download of http://www.gravatar.com/avatar/07b1950664b5569324a88727516e761d?s=60&d=retro, with 3 tries remaining
[B#349] Starting download of http://www.gravatar.com/avatar/417979e451a4ed37c22f5340a9c3cd4a?s=60&d=retro, with 3 tries remaining
[B#349] Starting download of http://www.gravatar.com/avatar/417979e451a4ed37c22f5340a9c3cd4a?s=60&d=retro, with 3 tries remaining
[B#349] Starting download of http://www.gravatar.com/avatar/417979e451a4ed37c22f5340a9c3cd4a?s=60&d=retro, with 3 tries remaining
[B#349] Starting download of http://www.gravatar.com/avatar/417979e451a4ed37c22f5340a9c3cd4a?s=60&d=retro, with 3 tries remaining
[B#349] Starting download of http://www.gravatar.com/avatar/417979e451a4ed37c22f5340a9c3cd4a?s=60&d=retro, with 3 tries remaining
[B#349] Starting download of http://www.gravatar.com/avatar/417979e451a4ed37c22f5340a9c3cd4a?s=60&d=retro, with 3 tries remaining
[B#349] java.io.FileNotFoundException: C:\Users\flore\AppData\Roaming\.technic\assets\avatars\gravitar\CanVox.png (Accès refusé)
[B#349]     at java.io.FileOutputStream.open0(Native Method)
[B#349]     at java.io.FileOutputStream.open(Unknown Source)
[B#349]     at java.io.FileOutputStream.<init>(Unknown Source)
[B#349]     at java.io.FileOutputStream.<init>(Unknown Source)
[B#349]     at net.technicpack.launchercore.mirror.download.Download.run(Download.java:103)
[B#349]     at net.technicpack.launchercore.mirror.MirrorStore.downloadFile(MirrorStore.java:116)
[B#349]     at net.technicpack.launchercore.mirror.MirrorStore.downloadFile(MirrorStore.java:146)
[B#349]     at net.technicpack.launchercore.mirror.MirrorStore.downloadFile(MirrorStore.java:150)
[B#349]     at net.technicpack.launchercore.image.face.WebAvatarImageStore.downloadImage(WebAvatarImageStore.java:46)
[B#349]     at net.technicpack.launchercore.image.face.WebAvatarImageStore.downloadImage(WebAvatarImageStore.java:31)
[B#349]     at net.technicpack.launchercore.image.ImageJob$2.run(ImageJob.java:128)
[B#349] Download of http://www.gravatar.com/avatar/417979e451a4ed37c22f5340a9c3cd4a?s=60&d=retro Failed!
[B#349] Starting download of http://www.gravatar.com/avatar/417979e451a4ed37c22f5340a9c3cd4a?s=60&d=retro, with 2 tries remaining
[B#349] Download of http://www.gravatar.com/avatar/417979e451a4ed37c22f5340a9c3cd4a?s=60&d=retro Failed!
[B#349] Starting download of http://www.gravatar.com/avatar/417979e451a4ed37c22f5340a9c3cd4a?s=60&d=retro, with 2 tries remaining
[B#349] Analytics Response [runLauncher]: 200
[B#349] Starting download of http://cdn.technicpack.net/platform2/pack-logos/552680.png?1419880146, with 3 tries remaining
[B#349] Starting download of http://cdn.technicpack.net/platform2/pack-backgrounds/552680.jpg?1419880146, with 3 tries remaining
[B#349] Starting download of http://cdn.technicpack.net/platform2/pack-icons/552680.png?1419880146, with 3 tries remaining
[B#349] Starting download of http://cdn.technicpack.net/platform2/pack-icons/552680.png?1419880146, with 3 tries remaining
[B#349] SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
[B#349] SLF4J: Defaulting to no-operation (NOP) logger implementation
[B#349] SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
[B#349] File version.json not found in C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox\bin\modpack.jar
[B#349] Running C:\Program Files\Java\jre1.8.0_121\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms4096m -Xmx4096m -XX:+UseG1GC -XX:MaxGCPauseMillis=4 -Djava.library.path=C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox\bin\natives -Dfml.core.libraries.mirror=http://mirror.technicpack.net/Technic/lib/fml/%s -Dminecraft.applet.TargetDirectory=C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox -Djava.net.preferIPv4Stack=true -cp C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox\bin\modpack.jar;C:\Users\flore\AppData\Roaming\.technic\cache\net\technicpack\legacywrapper\1.2.1\legacywrapper-1.2.1.jar;C:\Users\flore\AppData\Roaming\.technic\cache\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\flore\AppData\Roaming\.technic\cache\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar;C:\Users\flore\AppData\Roaming\.technic\cache\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\flore\AppData\Roaming\.technic\cache\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\flore\AppData\Roaming\.technic\cache\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\flore\AppData\Roaming\.technic\cache\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox\bin\minecraft.jar net.technicpack.legacywrapper.Launch Ephrodeon token:942922de2254488c8d7b3024bc93e97d:52b79e979baf45759fe5e1d1ccef1e9e --gameDir C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox --assetsDir C:\Users\flore\AppData\Roaming\.technic\assets\virtual\legacy --title Yogbox --icon C:\Users\flore\AppData\Roaming\.technic\assets\packs\yogbox\icon.png
[B#349] C:\Program Files\Java\jre1.8.0_121\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms4096m -Xmx4096m -XX:+UseG1GC -XX:MaxGCPauseMillis=4 -Djava.library.path=C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox\bin\natives -Dfml.core.libraries.mirror=http://mirror.technicpack.net/Technic/lib/fml/%s -Dminecraft.applet.TargetDirectory=C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox -Djava.net.preferIPv4Stack=true -cp C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox\bin\modpack.jar;C:\Users\flore\AppData\Roaming\.technic\cache\net\technicpack\legacywrapper\1.2.1\legacywrapper-1.2.1.jar;C:\Users\flore\AppData\Roaming\.technic\cache\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\flore\AppData\Roaming\.technic\cache\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar;C:\Users\flore\AppData\Roaming\.technic\cache\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\flore\AppData\Roaming\.technic\cache\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\flore\AppData\Roaming\.technic\cache\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\flore\AppData\Roaming\.technic\cache\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox\bin\minecraft.jar net.technicpack.legacywrapper.Launch Ephrodeon token:942922de2254488c8d7b3024bc93e97d:52b79e979baf45759fe5e1d1ccef1e9e --gameDir C:\Users\flore\AppData\Roaming\.technic\modpacks\yogbox --assetsDir C:\Users\flore\AppData\Roaming\.technic\assets\virtual\legacy --title Yogbox --icon C:\Users\flore\AppData\Roaming\.technic\assets\packs\yogbox\icon.png 
[B#349]  [Ljava.lang.String;@119d7047
[B#349] Analytics Response [runModpack]: 200
[B#349] Starting download of http://cdn.technicpack.net/platform2/pack-icons/552680.png?1419880146, with 3 tries remaining

[JaariAtmc]

Try updating your NVIDIA drivers.