scaryfacept

whenever I try to download a modpack it gives this error this and the error that appears on the console: [B#534] java.lang.NoClassDefFoundError: org/eclipse/aether/impl/DefaultServiceLocator$ErrorHandler [B#534] at net.technicpack.minecraftcore.install.tasks.HandleVersionFileTask.<init>(HandleVersionFileTask.java:60) [B#534] at net.technicpack.launcher.launch.Installer.buildTasksQueue(Installer.java:282) [B#534] at net.technicpack.launcher.launch.Installer$1.run(Installer.java:114) [B#534] at java.lang.Thread.run(Unknown Source) [B#534] Caused by: java.lang.ClassNotFoundException: org.eclipse.aether.impl.DefaultServiceLocator$ErrorHandler [B#534] at java.net.URLClassLoader.findClass(Unknown Source) [B#534] at com.regexlab.j2e.Jar2ExeClassLoader.findClass(Unknown Source) [B#534] at java.lang.ClassLoader.loadClass(Unknown Source) [B#534] at java.lang.ClassLoader.loadClass(Unknown Source) [B#534] ... 4 more [B#534] Unhandled Exception in Thread[Thread-194,6,main] and this message appears after trying several times: the modpack does not appear to be installed or is corrupted and is not available for offline play