need some help about a bug that from amidst-v4-7

[wahhhwa]

here it is:
Error

amidst.mojangapi.minecraftinterface.MinecraftinterfaceCreationException: This version of Minecraftisntcompatible with yourJava installaion
at
amidst.mojangapi.minecraftinterface.Minecraftlnterfaces.fromLocalProfile(Minecraftlnterfaces.java:50)
at amidst.mojangapi.RunningLauncherProfile.from(RunningLauncherProfile.java:26)
at amidst.mojangapi.LauncherProfileRunner.run(LauncherProfileRunner.java:22)
at amidst.gui.profileselect.LocalProfileComponent.tryLoad(LocalProfileComponent.java:142)at amidst.threading.WorkerExecutor.lambda$run$9(WorkerExecutor.java:71)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)at java.lang.Thread.run(Unknown Source)
C(1stlypatkysJ .spoto剎ces rsnron ehntncrnlsterFMricike e hestre comeret a moePe st s o ot rasu trmeloss ih rsin.1 .1ts esin t aRAatimepmlyreeies c.s i esios optoi2.at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)at java.net.URLClassLoader.findClass(Unknown Source)at java.lang.ClassLoader.loadClass(Unknown Source)at java.lang.ClassLoader.loadClass(Unknown Source)
at amidst.mojangapi.minecraftinterface.RecognisedVersion.getMainClassFields(RecognisedVersion.java:290)at amidst.mojangapi.minecraftinterface.RecognisedVersion.generateMagicString(RecognisedVersion.java:281)at amidst.mojangapi.minecraftinterface.RecognisedVersion.from(RecognisedVersion.java:276)
at amidst.mojangapi.minecraftinterface.Minecraftinterfaces.fromLocalProfile(Minecraftlnterfaces.java:35)... 7 more