Hello,
I understand that you have issues downloading the latest AO update.
Please try the following: Go to the game center settings (the gear icon in the top right corner) and try
to disable 'Use advanced peer search techniques', as your system might not support it,
uncheck 'Limit maximum number of connections' or increase the number of maximum connections,
set the download and upload limits to "No limit", also try to 'Delete temporary My.com Game Center files'.
It could also be, that the My.com servers are under hard load due to the latest patch.
If the problem persists please provide us with more information about what exactly happens,
or what doesn't but should happen.