amundo

Hey, i have alot of mods installed, and one of them requires redstone flux. I read that i should add "-Dcofh.rf.crashOnOldAPI=false" but it doesn't work, i tried deleting the whole JVM arguments and just adding onto the "original" ones but it just won't work. Can someone help me with this?

When I open MC launcher and when I click on more versions options it does not give any info about forge. And about the new version of forge what am I supposed to do with the .zip file? Forge staff or anyone answer to this pleaseeeeee. (Bonus question: how do I install buildcraft in 1.12.2?)