When either Liteloader or Optifine is installed Tough As Nails crashes before Forge can initialize. No other mods are installed, and I suspect there may be a problem with one of the core transformers. Logs of each crash are kept below:

fml-client-latest - Optifine.log
fml-client-latest - Liteloader.log

We don't support Liteloader or Optifine.