Pack 5/8/17 update complete. It may take a little while for the launcher to recognize the change in files, so give it a little time before you give up on it.
Inventory Tweaks and Xaero's Minimap have been added, so be sure to re-install
Thanks to them causing server crashes of epic proportions, Ars Magica 2 and its supporting mod, Animation API have kicked the bucket. Apologies to magic fans everywhere, but there's still plenty of magic left :)