Here are my PC specs: Intel Core i5-3350P CPU 8 GB RAM NVIDIA GeForce GT630 Graphics Card Windows 64-bit I checked the files on the installation folder and found a log file called error.log with this written on it: java.lang.ClassNotFoundException: zombie.gameStates.MainScreenState at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at com.exe4j.runtime.LauncherEngine.launch(Unknown Source) at com.exe4j.runtime.WinLauncher.main(Unknown Source) I also found a .txt file called hs_err_pid7724.log It has a lot of stuff written in it but something interesting that caught my eye are the very first few lines: ## There is insufficient memory for the Java Runtime Environment to continue.# Native memory allocation (malloc) failed to allocate 24 bytes for AllocateHeap# Possible reasons:# The system is out of physical RAM or swap space# In 32 bit mode, the process size limit was hit# Possible solutions:# Reduce memory load on the system# Increase physical memory or swap space# Check if swap backing store is full# Use 64 bit Java on a 64 bit OS# Decrease Java heap size (-Xmx/-Xms)# Decrease number of Java threads# Decrease Java thread stack sizes (-Xss)# Set larger code cache with -XX:ReservedCodeCacheSize=# This output file may be truncated or incomplete.## Out of Memory Error (memory/allocation.inline.hpp:60), pid=7724, tid=5296## JRE version: 7.0_25-b17# Java VM: Java HotSpot Server VM (23.25-b01 mixed mode windows-x86 )# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows# It may possibly be what you said, i 'll try your method out and post if it worked.