Beug minecraft

[lexmad]

Bonjours,mon minecraft ne ce lance et me fait une erreur :

Launching game
Unpacking natives to C:\Users\lex\AppData\Roaming\.altisnews\versions\1.7.10-custom\1.7.10-custom-natives-114938700447874
Couldn't unpack natives!
java.util.zip.ZipException: error in opening zip file
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.zip.ZipFile.<init>(Unknown Source)
at net.minecraft.launcher.GameLauncher.unpackNatives(GameLauncher.java:503)
at net.minecraft.launcher.GameLauncher.launchGame(GameLauncher.java:163)
at net.minecraft.launcher.GameLauncher.onDownloadJobFinished(GameLauncher.java:274)
at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:129)
at net.minecraft.launcher.updater.download.DownloadJob.access$0(DownloadJob.java:110)
at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:152)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)