If you are suddenly running into error 3108 and...
If you ordered from the sony digital store like me...
Go to your email, find the one from webhelp.v4
copy down your order number then click the findmyorder.com link
register if you have to, then input your order number and hit find
You'll get a page with a bunch of stuff on it. Find the bit that has your SERIAL NUMBER. Copy that down
Open the launcher, click the button at the bottom that says Account.
You should get a page that looks like this: (pilfered from an earlier post)
http://i1099.photobucket.com/albums/...psb9a20508.jpg
Click the button that looks like a meteor at the bottom with a plus sign.
input that SERIAL NUMBER!
Hit next like a baws.
Play game, if you dont have the 30 free days, add a payment method you cheap sucka. Then play game.