How to fix minecraftSP crashes?

I'm trying to install mods. I downloaded minecraftSP and I played it fine. But when I put the mod into mods folder, or use auto installer like skydaz, the launcher poped up, and then it disapeared. No black screen or anything, Just disapeared.
The crash report is too long. But I hope you get the idea of what i'm trying to say.
My minecraft already has modloader, optifine, coder pack, forge. It's 1.6.4.
Help me fix this D: I really want to play mods D

MinecraftSP is a pirated version of the game that mods do not work on. Sorry buddy, but if you want mods, you've gotta buy it.

Fortunately, the Gods of Minecraft have made it impossible to install mods using a pirated version.
You should pay the small fee of 20$, and buy the game legitimately.