So I got minecraft a few weeks ago and I want to play with some mods. And I am running version 1.7.2 because it says it on the bottom left of my screen and I set it that way. I tried multiple times of trying to download Forge, but it keeps on saying that I need to manually run version 1.7.2. I also deleted minecraft and re downloaded it and tried to do some random things, but it doesn't work. Can anyone figure this out?