So my current launcher (version is 2.0.832 as of 4-9-17) is unable to install the Forge 1.10.2 version into the game; I will tell it to install and it will say it has done so successfully yet it will not show anywhere in the launcher that the files exist, yet when I go into my actual files it shows its there. I already have Forge 1.11.2 installed would this be conflicting with the older version, or is the older versions of forge no-longer use-able?