I guess i'll have to wait then, oh well.
I have a 1.12.2 setup that works fine so I'll just work on that for the time being. Thanks for the assistance though.
Why does it want to delete ForgeMultipart? How can I prevent this? If I do as it says, Minecraft will prompt me to reinstall ForgeMultipart as it is required for some mods I am using.
I removed the dev version and replaced it with universal; no change.