From 29edd242cd7a1fadedf4fb874ea8bbd4e643bffa Mon Sep 17 00:00:00 2001
From: Christian <cpw@weeksfamily.ca>
Date: Sun, 10 Mar 2013 01:05:31 -0500
Subject: [PATCH] Fix coremods without a manifest crashing the game. Closes
 #181

---
 common/cpw/mods/fml/relauncher/RelaunchLibraryManager.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/common/cpw/mods/fml/relauncher/RelaunchLibraryManager.java b/common/cpw/mods/fml/relauncher/RelaunchLibraryManager.java
index 178f354ed0..169a316796 100644
--- a/common/cpw/mods/fml/relauncher/RelaunchLibraryManager.java
+++ b/common/cpw/mods/fml/relauncher/RelaunchLibraryManager.java
@@ -354,6 +354,11 @@ public class RelaunchLibraryManager
             try
             {
                 jar = new JarFile(coreMod);
+                if (jar.getManifest() == null)
+                {
+                    FMLRelaunchLog.warning("Found an un-manifested jar file in the coremods folder : %s, it will be ignored.", coreMod.getName());
+                    continue;
+                }
                 mfAttributes = jar.getManifest().getMainAttributes();
             }
             catch (IOException ioe)