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[21:01:31 INFO]: Minecraft Launcher 1.6.19 (through bootstrap 100) started on windows...
[21:01:31 INFO]: Current time is Jul 28, 2015 9:01:31 PM
[21:01:31 INFO]: System.getProperty('os.name') == 'Windows Vista'
[21:01:31 INFO]: System.getProperty('os.version') == '6.0'
[21:01:31 INFO]: System.getProperty('os.arch') == 'amd64'
[21:01:31 INFO]: System.getProperty('java.version') == '1.8.0_25'
[21:01:31 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[21:01:31 INFO]: System.getProperty('sun.arch.data.model') == '64'
[21:01:31 INFO]: proxy == DIRECT
[21:01:31 INFO]: JFX is already initialized
[21:01:31 INFO]: Refreshing local version list...
[21:01:31 INFO]: Refreshing remote version list...
[21:01:33 INFO]: Refresh complete.
[21:01:33 INFO]: Loaded 10 profile(s); selected '1.7.2'
[21:01:33 INFO]: Refreshing auth...
[21:01:33 INFO]: Logging in with access token
[21:01:37 INFO]: Getting syncinfo for selected version
[21:01:37 INFO]: Queueing library & version downloads
[21:01:38 INFO]: Download job 'Version & Libraries' started (16 threads, 24 files)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\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)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries'... (try 0)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\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)
[21:01:38 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries'... (try 0)
[21:01:39 INFO]: Download job 'Resources' skipped as there are no files to download
[21:01:39 INFO]: Job 'Resources' finished successfully (took 0:00:00.000)
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar for job 'Version & Libraries'... (try 0)
[21:01:39 INFO]: Finished downloading C:\Users\Robin\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
[21:01:39 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries'... (try 0)
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.10.Final\netty-all-4.0.10.Final.jar for job 'Version & Libraries'... (try 0)
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries'... (try 0)
[21:01:39 INFO]: Finished downloading C:\Users\Robin\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
[21:01:39 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.3\authlib-1.3.jar for job 'Version & Libraries'... (try 0)
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.3\authlib-1.3.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries'... (try 0)
[21:01:39 INFO]: Finished downloading C:\Users\Robin\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
[21:01:39 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries'... (try 0)
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Attempting to download C:\Users\Robin\AppData\Roaming\.minecraft\versions\1.7.2\1.7.2.jar for job 'Version & Libraries'... (try 0)
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.10.Final\netty-all-4.0.10.Final.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Finished downloading C:\Users\Robin\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
[21:01:39 INFO]: Finished downloading C:\Users\Robin\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
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Finished downloading C:\Users\Robin\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
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Finished downloading C:\Users\Robin\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
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar for job 'Version & Libraries': Local file matches local checksum, using that
[21:01:39 INFO]: Finished downloading C:\Users\Robin\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
[21:01:39 INFO]: Finished downloading C:\Users\Robin\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
[21:01:39 INFO]: Finished downloading C:\Users\Robin\AppData\Roaming\.minecraft\versions\1.7.2\1.7.2.jar for job 'Version & Libraries': Used own copy as it matched etag
[21:01:39 INFO]: Job 'Version & Libraries' finished successfully (took 0:00:01.162)
[21:01:39 INFO]: Launching game
[21:01:39 INFO]: Unpacking natives to C:\Users\Robin\AppData\Roaming\.minecraft\versions\1.7.2\1.7.2-natives-18537374544041
[21:01:39 INFO]: Reconstructing virtual assets folder at C:\Users\Robin\AppData\Roaming\.minecraft\assets\virtual\legacy
[21:01:39 INFO]: Launching in C:\minecraft\1.7.2
[21:01:39 INFO]: Half command: C:\Java64\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -Djava.library.path=C:\Users\Robin\AppData\Roaming\.minecraft\versions\1.7.2\1.7.2-natives-18537374544041 -cp C:\Users\Robin\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.10.Final\netty-all-4.0.10.Final.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.3\authlib-1.3.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\Robin\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\Robin\AppData\Roaming\.minecraft\versions\1.7.2\1.7.2.jar net.minecraft.client.main.Main
[21:01:39 ERROR]: Couldn't launch game
java.io.IOException: Cannot run program "C:\Java64\bin\javaw.exe" (in directory "C:\minecraft\1.7.2"): CreateProcess error=2, Le fichier spécifié est introuvable
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048) ~[?:1.8.0_25]
at com.mojang.launcher.game.process.direct.DirectGameProcessFactory.startGame(DirectGameProcessFactory.java:14) ~[launcher.jar:1.6.19]
at net.minecraft.launcher.game.MinecraftGameRunner.launchGame(MinecraftGameRunner.java:218) [launcher.jar:1.6.19]
at com.mojang.launcher.game.runner.AbstractGameRunner.onDownloadJobFinished(AbstractGameRunner.java:186) [launcher.jar:1.6.19]
at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:122) [launcher.jar:1.6.19]
at com.mojang.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:12) [launcher.jar:1.6.19]
at com.mojang.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:86) [launcher.jar:1.6.19]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_25]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_25]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_25]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_25]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_25]
Caused by: java.io.IOException: CreateProcess error=2, Le fichier spécifié est introuvable
at java.lang.ProcessImpl.create(Native Method) ~[?:1.8.0_25]
at java.lang.ProcessImpl.<init>(ProcessImpl.java:386) ~[?:1.8.0_25]
at java.lang.ProcessImpl.start(ProcessImpl.java:137) ~[?:1.8.0_25]
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029) ~[?:1.8.0_25]
... 11 more
[21:01:39 INFO]: Deleting C:\Users\Robin\AppData\Roaming\.minecraft\versions\1.7.2\1.7.2-natives-18537374544041

I don't really messed up with Java since the game works fine before launcher 1.6.19.

Anyway. I managed to fix by using Java 32 bit unstead.

Thank you for the tip.