From 57de5c1b90e81dfb2b89da8c9bbbec3bffe74451 Mon Sep 17 00:00:00 2001
From: Christian <cpw@weeksfamily.ca>
Date: Sat, 11 Aug 2012 12:24:43 -0400
Subject: [PATCH] Fix up launch when obfuscated *sigh*

---
 .../cpw/mods/fml/relauncher/RelaunchClassLoader.java   | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/fml/common/cpw/mods/fml/relauncher/RelaunchClassLoader.java b/fml/common/cpw/mods/fml/relauncher/RelaunchClassLoader.java
index 9f7f44b2d8..344710cc58 100644
--- a/fml/common/cpw/mods/fml/relauncher/RelaunchClassLoader.java
+++ b/fml/common/cpw/mods/fml/relauncher/RelaunchClassLoader.java
@@ -79,10 +79,14 @@ public class RelaunchClassLoader extends URLClassLoader
 
         try
         {
-            String pkgname = name.substring(0, name.lastIndexOf('.'));
-            if (getPackage(pkgname)==null)
+            int lastDot = name.lastIndexOf('.');
+            if (lastDot > -1)
             {
-                definePackage(pkgname, null, null, null, null, null, null, null);
+                String pkgname = name.substring(0, lastDot);
+                if (getPackage(pkgname)==null)
+                {
+                    definePackage(pkgname, null, null, null, null, null, null, null);
+                }
             }
             byte[] basicClass = getClassBytes(name);
             byte[] transformedClass = runTransformers(name, basicClass);