How to install the witchery mod for minecraft 1.7.2?

I have used the mod before with several different mods and now its crashing my minecraft and some of the other mods like tree capacitor universal are also crashing it and i need some help on how to fix this problem. I have tried deleting it and re-installing it but it still crashes. I need any help on how i can use the mods agian

You seem to think that if you just install it right, it will not crash.
If it is crashing at all, it is most likely because of bugs in the mod, not because you installed it wrong.
The only way to not crash is to not use the mod until the developer fixes it.

I figered it out but thanks any way