You need atleast 2 GB of memory set on your launcher to run this modpack correctly!
MOD LIST: http://www.ambientcraft.com/forum/m/19738530/viewthread/11520907-mod-list
64-bit Java only. You can find 64-bit version of java here: http://www.java.com/en/download/manual.jsp
Visit our website and forums if you'd like to report an error or make a suggestion for the pack or our server.