When I go to buy an app on my G Tablet, I click the buy button, I click to add my credit card, and when i hit okay, an Attention screen pops up. It says "A server error has occured." Now I can't buy any app. Can anyone help?
Try clearing the cache. From the home screen go to Settings->Applications->Manage Application, look for Market select it and clear the cache. You might have to sign in with your google account again, but it should fix the problem.