TunaS

i cant install modpacks ERROR CODE---> [B#546] java.lang.NoClassDefFoundError: org/eclipse/aether/impl/DefaultServiceLocator$ErrorHandler [B#546] at net.technicpack.minecraftcore.install.tasks.HandleVersionFileTask.<init>(HandleVersionFileTask.java:60) [B#546] at net.technicpack.launcher.launch.Installer.buildTasksQueue(Installer.java:282) [B#546] at net.technicpack.launcher.launch.Installer$1.run(Installer.java:114) [B#546] at java.lang.Thread.run(Unknown Source) [B#546] Caused by: java.lang.ClassNotFoundException: org.eclipse.aether.impl.DefaultServiceLocator$ErrorHandler [B#546] at java.net.URLClassLoader.findClass(Unknown Source) [B#546] at com.regexlab.j2e.Jar2ExeClassLoader.findClass(Unknown Source) [B#546] at java.lang.ClassLoader.loadClass(Unknown Source) [B#546] at java.lang.ClassLoader.loadClass(Unknown Source) [B#546] ... 4 more [B#546] Unhandled Exception in Thread[Thread-51,6,main]