Sorry for the bump, but I still can't find a solution. I have found out that my error could be from:
* Someone is using my key from a different IP address
* Someone is using my key from the same IP, but has changed the name on the account (from the main menu)
* Internet failure
* Network Access is Blocked
I am using both a pc and a laptop. I use the same key for my laptop which runs on the same IP address via wireless connection. I am also using the same name for both computers (however, I did try changing my name on my pc, but changed it back to my name so that shouldn't be an issue).
I do have two firewalls (one is McAfee), but I opened up the required ports and allowed access for the game. I have more than one version of Blockland installed on both computers (to test maps and such), but I don't see how that would cause a problem. If someone is using my key / ID from a different ip address, is there a way I can find out? Any help is appreciated.