• Run the Spoutcraft Launcher.
  
• Click Options
• Check the radio button labeled "Manual build selection"
• Choose 1362 | 1.2.5 from the drop down menu.
• Check "Use latest LWJGL binaries".
• Click okay.
• Login to the game, allowing Spoutcraft to download the new files.
• Once at the menu, close the game.
• Open your start menu and type in %appdata% in the search bar, then press enter.
• Navigate to .spoutcraft/bin
  ...

Easy Install

• Download this custom spoutcraft.jar and copy it to .spoutcraft/bin, overwriting the original.
• Done!

Manual Install

• Open spoutcraft.jar with Winrar or 7Zip.
• Delete META-INF from the archive.
• ---- (OPTIONAL) Give META-INF the bird.
• In your MineLP directory, open ponysettings.txt.
• Change "ponylevel=2" to "ponylevel=1"
• Save and exit ponysettings.txt
• Copy the MineLP files into spoutcraft.jar, overwriting any files.
• Close spoutcraft.jar.
• Done! Run the game and enjoy!