I know the version of forge I used is compatible with all the mods I attempted to install (Railcraft, Buildcraft, etc...) forge also runs perfectly, until a mod is placed into the 'mods' folder; then it crashes every time, regardless of what mod I use. I have installed Forge multiple times, downloaded it from multiple sources, and completly deleted all my minecraft files (excluding saves) to ensure there were no problem causing files left behind after the last failed installation. 2 of my friends are running the exact same setup, same mods, same versions, works perfectly. I need to use these versions so I can play in a server with them.