Diablo 3 Error 37

Error 37_ occurs when the login servers for Diablo are at full capacity (occurring mainly on the Diablo 3 Launch day). To fix this issue, simply Try again until a spot has opened in the queue.

Error 317002_ occurs when the game servers for Diablo 3 are down, either for maintenance or simply have crashed, the fix for this issue is Try again!! (Also check out Diablo 3 Server Status)