MainCraft не хочет работать.

Сыну решил забаву поставить и напоролся вот на такие грабли.
java -jar /home/elena/Загрузки/mlauncher_release_1_34.jar
Exception in thread "main" java.lang.ExceptionInInitializerError
at net.minecraft.launcher.process.JavaProcessLauncher.<init>(JavaProcessLauncher.java:21)
at com.voicenet.mlauncher.Bootstrapper.createLauncher(Bootstrapper.java:50)
at com.voicenet.mlauncher.Bootstrapper.createLauncher(Bootstrapper.java:73)
at com.voicenet.mlauncher.Bootstrapper.<init>(Bootstrapper.java:77)
at com.voicenet.mlauncher.Bootstrapper.main(Bootstrapper.java:39)
Caused by: java.lang.NumberFormatException: For input string: "9-interna"
at jdk.internal.math.FloatingDecimal.readJavaFormatString(java.base@9-internal/FloatingDecimal.java:2054)
at jdk.internal.math.FloatingDecimal.parseDouble(java.base@9-internal/FloatingDecimal.java:110)
at java.lang.Double.parseDouble(java.base@9-internal/Double.java:539)
at com.voicenet.util.os.OS.getJavaVersion(OS.java:73)
at com.voicenet.util.os.OS.<clinit>(OS.java:265)
... 5 more
Подскажите в чес прикол может быть?

java -version
openjdk version "9-internal"
OpenJDK Runtime Environment (build 9-internal+0-2016-04-14-195246.buildd.src)
OpenJDK 64-Bit Server VM (build 9-internal+0-2016-04-14-195246.buildd.src, mixed mode)