The Classic Pack updated to version 3.1.1
All ProjectRed files 126.96.36.199 >> 188.8.131.52
Fixes an exploit/hack with modified mods.
Type in the modpack name (The Classic Pack) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select The Classic Pack from the list on the left. The launcher will handle everything else!