• Minecraft Version: 1.12.2
• BetterFps Version: 1.4.8
• Forge/LiteLoader Version (if any): forge-14.23.2.2618
• Crash Logs (if any):
• Other Mods (if any):

the Manifest is missing the version number

{
  "id": "betterfps",
  "name": "BetterFps",
  "version": "",
  "authors": ["Guichaguri"],
  "description": "Performance Improvements",
  "url": "http://guichaguri.github.io/BetterFps/"
}