This error may be caused by problems with your internet cache. Your main browser is directly liked to the internet which AVA runs off of and is therefore directly effected by cookies and internet cache.
Try taking a look at this link: http://www.aeriagames.com/forums/en/viewtopic.php?t=1809523
It is a list of programs that may help you get ingame.
The program from the list that I recommend is CCleaner. CCleaner is a free program that will clear your browser history and internet cache as well as remove useless files and documents which will all help optimize your PC as a whole.
You may also want to take a look at Game Booster. It will clear all of the processes that lag your game and/or may be hindering you from getting ingame.
Hope this helps