23stone

Im trying to install forge 1.7.10 on a mac and it gets stuck at downloading libraries, unpacking packed file akka-actor_2.11-2.3.3.jar.pack.xz this is the installer log Considering library net.minecraftforge:forge:1.7.10-10.13.4.1558-1.7.10: Not Downloading Considering library net.minecraft:launchwrapper:1.12: Not Downloading Considering library org.ow2.asm:asm-all:5.0.3: Not Downloading Considering library com.typesafe.akka:akka-actor_2.11:2.3.3 Checking "/Users/23stone/Library/Application Support/minecraft/libraries/com/typesafe/akka/akka-actor_2.11/2.3.3/akka-actor_2.11-2.3.3.jar" internal checksums checksums.sha1 was not found, validation failed Downloading library com.typesafe.akka:akka-actor_2.11:2.3.3 Unpacking packed file akka-actor_2.11-2.3.3.jar.pack.xz Signed Checksum Length: 140942 Total Length: 2606968 Temp File: /var/folders/1l/lnjlgyzn5nbbtf5pt8ptx61c0000gq/T/art2414281012652444883.pack Exception in thread "main" java.lang.NoClassDefFoundError: java/util/jar/Pack200 at net.minecraftforge.installer.DownloadUtils.unpackLibrary(DownloadUtils.java:264) at net.minecraftforge.installer.DownloadUtils.downloadInstalledLibraries(DownloadUtils.java:111) at net.minecraftforge.installer.ClientInstall.run(ClientInstall.java:135) at net.minecraftforge.installer.InstallerAction.run(InstallerAction.java:42) at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:290) at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:154) at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:40) Caused by: java.lang.ClassNotFoundException: java.util.jar.Pack200 at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522) ... 7 more