Fix for the mcp errors!

As some people know there are problems with mcp 8.11, and it has lwjgl errors (this is for lwjgl errors!)
The problem is that mcp 8.11 is for 1.6.3 and is searching for the 1.6.3 jar in the versions
You can fix by renaming the version but this is simpler
You first go to your folder that mcp is
My is C:\Users\Apoc\Desktop\HackClient
Then navigate to C:\Users\Apoc\Desktop\HackClient\eclipse\client and open .classpath
In there ( i use notepad++) search for 1.6.3 and replace it with 1.6.4 so it looks like this

Original

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.Standar dVMType/JavaSE-1.6"/>
<classpathentry kind="lib" path="jars/libraries/argo/argo/2.25_fixed/argo-2.25_fixed.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/google/code/gson/gson/2.2.2/gson-2.2.2.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/google/guava/guava/14.0/guava-14.0.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/paulscode/codecjorbis/20101023/codecjorbis-20101023.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/paulscode/codecwav/20101023/codecwav-20101023.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/paulscode/libraryjavasound/20101123/libraryjavasound-20101123.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/paulscode/librarylwjglopenal/20100824/librarylwjglopenal-20100824.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/paulscode/soundsystem/20120107/soundsystem-20120107.jar"/>
<classpathentry kind="lib" path="jars/libraries/commons-io/commons-io/2.4/commons-io-2.4.jar"/>
<classpathentry kind="lib" path="jars/libraries/net/java/jinput/jinput/2.0.5/jinput-2.0.5.jar"/>
<classpathentry kind="lib" path="jars/libraries/net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-windows.jar"/>
<classpathentry kind="lib" path="jars/libraries/net/java/jutils/jutils/1.0.0/jutils-1.0.0.jar"/>
<classpathentry kind="lib" path="jars/libraries/net/sf/jopt-simple/jopt-simple/4.5/jopt-simple-4.5.jar"/>
<classpathentry kind="lib" path="jars/libraries/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1.jar"/>
<classpathentry kind="lib" path="jars/libraries/org/bouncycastle/bcprov-jdk15on/1.47/bcprov-jdk15on-1.47.jar"/>
<classpathentry kind="lib" path="jars/libraries/org/lwjgl/lwjgl/lwjgl-platform/2.9.0/lwjgl-platform-2.9.0-natives-windows.jar"/>
<classpathentry kind="lib" path="jars/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.0/lwjgl_util-2.9.0.jar"/>
<classpathentry kind="lib" path="jars/libraries/org/lwjgl/lwjgl/lwjgl/2.9.0/lwjgl-2.9.0.jar"/>
<classpathentry kind="lib" path="jars/versions/1.6.3/1.6.3.jar">
<attributes>
<attribute name="org.eclipse.jdt.launching.CLASSPATH_ATTR_LIB RARY_PATH_ENTRY" value="Client/jars/versions/1.6.3/1.6.3-natives"/>
</attributes>
</classpathentry>
<classpathentry kind="output" path="bin"/>
</classpath>

And change it to:

New

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" path="src"/>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.Standar dVMType/JavaSE-1.6"/>
<classpathentry kind="lib" path="jars/libraries/argo/argo/2.25_fixed/argo-2.25_fixed.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/google/code/gson/gson/2.2.2/gson-2.2.2.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/google/guava/guava/14.0/guava-14.0.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/paulscode/codecjorbis/20101023/codecjorbis-20101023.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/paulscode/codecwav/20101023/codecwav-20101023.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/paulscode/libraryjavasound/20101123/libraryjavasound-20101123.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/paulscode/librarylwjglopenal/20100824/librarylwjglopenal-20100824.jar"/>
<classpathentry kind="lib" path="jars/libraries/com/paulscode/soundsystem/20120107/soundsystem-20120107.jar"/>
<classpathentry kind="lib" path="jars/libraries/commons-io/commons-io/2.4/commons-io-2.4.jar"/>
<classpathentry kind="lib" path="jars/libraries/net/java/jinput/jinput/2.0.5/jinput-2.0.5.jar"/>
<classpathentry kind="lib" path="jars/libraries/net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-windows.jar"/>
<classpathentry kind="lib" path="jars/libraries/net/java/jutils/jutils/1.0.0/jutils-1.0.0.jar"/>
<classpathentry kind="lib" path="jars/libraries/net/sf/jopt-simple/jopt-simple/4.5/jopt-simple-4.5.jar"/>
<classpathentry kind="lib" path="jars/libraries/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1.jar"/>
<classpathentry kind="lib" path="jars/libraries/org/bouncycastle/bcprov-jdk15on/1.47/bcprov-jdk15on-1.47.jar"/>
<classpathentry kind="lib" path="jars/libraries/org/lwjgl/lwjgl/lwjgl-platform/2.9.0/lwjgl-platform-2.9.0-natives-windows.jar"/>
<classpathentry kind="lib" path="jars/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.0/lwjgl_util-2.9.0.jar"/>
<classpathentry kind="lib" path="jars/libraries/org/lwjgl/lwjgl/lwjgl/2.9.0/lwjgl-2.9.0.jar"/>
<classpathentry kind="lib" path="jars/versions/1.6.4/1.6.4.jar">
<attributes>
<attribute name="org.eclipse.jdt.launching.CLASSPATH_ATTR_LIB RARY_PATH_ENTRY" value="Client/jars/versions/1.6.4/1.6.4-natives"/>
</attributes>
</classpathentry>
<classpathentry kind="output" path="bin"/>
</classpath>

That should fix the problem!
Ask for more help in the comments il try to help you if i know how!
BTW you can also decompile 1.7.x, just needs abit more fiddling around with that file!