Jeu inlancable

Bonjour, je voulais jouer à mminecraft mais à chaque fois que je veux jouer on m'indique ceci dans la console:
Shiginima Launcher: SE V1.500 (through bootstrap 1) started on windows...
Refreshing local version list...
Current time is Mar 29, 2015 10:37:20 AM
System.getProperty('os.name') == 'Windows 7'
System.getProperty('os.version') == '6.1'
System.getProperty('os.arch') == 'x86'
System.getProperty('java.version') == '1.8.0_25'
System.getProperty('java.vendor') == 'Oracle Corporation'
System.getProperty('sun.arch.data.model') == '32'
Unexpected exception refreshing version list
java.lang.IllegalArgumentException: Version '1.7.10' is already tracked
at net.minecraft.launcher.updater.VersionList.addVersion(VersionList.java:98)
at net.minecraft.launcher.updater.LocalVersionList.refreshVersions(LocalVersionList.java:53)
at net.minecraft.launcher.updater.VersionManager.refreshVersions(VersionManager.java:63)
at net.minecraft.launcher.Launcher$1.run(Launcher.java:174)
at java.util.concurrent.Executors$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)

Loaded 12 profile(s); selected 'bhhuhp'
Getting syncinfo for selected version
Unhandled exception in executor net.minecraft.launcher.updater.ExceptionalThreadPoolExecutor$ExceptionalFutureTask@d87339
java.util.concurrent.ExecutionException: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.concurrent.FutureTask.report(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at net.minecraft.launcher.updater.ExceptionalThreadPoolExecutor$ExceptionalFutureTask.done(ExceptionalThreadPoolExecutor.java:79)
at java.util.concurrent.FutureTask.finishCompletion(Unknown Source)
at java.util.concurrent.FutureTask.setException(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)
Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.rangeCheck(Unknown Source)
at java.util.ArrayList.get(Unknown Source)
at net.minecraft.launcher.GameLauncher.playGame(GameLauncher.java:130)
at net.minecraft.launcher.ui.bottombar.PlayButtonPanel$1$1.run(PlayButtonPanel.java:48)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
... 4 more

Merci de répondre ^^