Fluxx 4 updated to version 1.0.0b
^ Buildcraft to 7.1.16
^ Buildcraft Compat to 7.1.4
^ Industrial Craft 2 to 2.2.817
^ Mekanism to 18.104.22.1686
^ MrTJPCore to 22.214.171.124
^ NEI Integration to 1.1.2
^ Project: Red to 4.7.0pre12.95
^ ProjectE to 1.9.5
Type in the modpack name (Fluxx 4) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Fluxx 4 from the list on the left. The launcher will handle everything else!