Need help installing these mods.

[signaturre]

I am trying to install these mods. -better furnaces -backpack -not enough items -forestry -optifine -railcraft As well as forge of course. But when I try to install railcraft, I get a bug, or a crash. (

) I've had the others installed for awhile. I do not know what the problem is. Thank you for the help in advance.

 

[mokonaModoki]

Upgrade to the Latest build of forge. Otherwise you will expirience the same issue with Thaumcraft and Greg Tech mods.

http://adf.ly/673885/http://files.minecraftforge.net/minecraftforge/minecraftforge-universal-latest.zip

[FallingFist]

This is not where to ask these questions, but yes. As previously stated, update your forge.