Microsoft Windows [Version 6.1.7601] 
Copyright © 2009 Microsoft Corporation.  All rights reserved. 
  
C:\Users\erjohns>java -version 
java version "1.6.0_17" 
Java SE Runtime Environment (build 1.6.0_17-b04) 
Java HotSpot Client VM (build 14.3-b01, mixed mode, sharing) 
  
C:\Users\erjohns>cd downloads 
  
C:\Users\erjohns\Downloads>java -jar forge-1.7.10-10.13.0.1180-installer.jar 
Considering library net.minecraftforge:forge:1.7.10-10.13.0.1180 
Considering library net.minecraft:launchwrapper:1.9 
Considering library org.ow2.asm:asm-all:4.1 
Considering library com.typesafe.akka:akka-actor_2.11:2.3.3 
Checking "C:\Users\erjohns\AppData\Roaming\.minecraft\libraries\com\typesafe\akk 
a\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar" internal checksums 
    checksums.sha1 validated successfully 
    Jar contents validated successfully 
Considering library com.typesafe:config:1.2.1 
Checking "C:\Users\erjohns\AppData\Roaming\.minecraft\libraries\com\typesafe\con 
fig\1.2.1\config-1.2.1.jar" internal checksums 
    checksums.sha1 validated successfully 
    Jar contents validated successfully 
Considering library org.scala-lang:scala-actors-migration_2.11:1.1.0 
Checking "C:\Users\erjohns\AppData\Roaming\.minecraft\libraries\org\scala-lang\s 
cala-actors-migration_2.11\1.1.0\scala-actors-migration_2.11-1.1.0.jar" internal 
 checksums 
    checksums.sha1 validated successfully 
    Jar contents validated successfully 
Considering library org.scala-lang:scala-compiler:2.11.1 
Downloading library org.scala-lang:scala-compiler:2.11.1 
Unpacking packed file scala-compiler-2.11.1.jar.pack.xz 
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space 
        at java.util.Arrays.copyOf(Unknown Source) 
        at java.io.ByteArrayOutputStream.write(Unknown Source) 
        at cpw.mods.fml.installer.DownloadUtils.readFully(DownloadUtils.java:326 
) 
        at cpw.mods.fml.installer.DownloadUtils.unpackLibrary(DownloadUtils.java 
:163) 
        at cpw.mods.fml.installer.DownloadUtils.downloadInstalledLibraries(Downl 
oadUtils.java:112) 
        at cpw.mods.fml.installer.ClientInstall.run(ClientInstall.java:96) 
        at cpw.mods.fml.installer.InstallerAction.run(InstallerAction.java:42) 
        at cpw.mods.fml.installer.InstallerPanel.run(InstallerPanel.java:289) 
        at cpw.mods.fml.installer.SimpleInstaller.launchGui(SimpleInstaller.java 
:148) 
        at cpw.mods.fml.installer.SimpleInstaller.main(SimpleInstaller.java:34)