what about your video card? I find this game sucks up a LOT of video memory. I actually had problems with random crashes when I "only" had a 520 MB video card. Even at 2 GB I still have issues but at least the game stays open for several hours before starting to struggle.
Try clicking settings on the launcher and take ALL your video settings down to the lowest level and see if the game will load then.
Also check your firewall and make sure AIKA has full permissions. This probably is not the case since you are actually starting to load, but can't hurt to check. You may have more than one fiewall.
Finally, check your Internet speed by going to www.speedtest.net
and running the tester. Anything less than about 3MB/second you are going to struggle, IMO.
I assume you are running a 64-bit system, otherwise all that RAM is wasted. 32-bit won't address more than about 3 GB.