You have to find the perfect Forge version for optifine here is how to do it!
First of go to :
optifine.net/downloads
Then : choose the version that you need and click on changelog
Then : You will see alots of coding things or what ever they called. All you have to do is find the version that your looking for. and you will see something called 'compatible with Forge #(some number)'
And you will see this
(this is just a example)
And keep that number in your mind
And visit
Forge website :
http://files.minecraftforge.net/And Then : Choose the version that you want and don't just click download. If you scroll down a teeny tiny bit you will see something called 'All versions'
And you have to find the version with that #Number we found earlier in optifine page
And you will see a exactly a version with that number
Same right?
And download that version! Walaaa! your done this should work ur optifine problmao
And Im sorry for my poor english and i hope you understand and i hope this helps!