I don't remember ever seeing this error before; I first got it on Firestorm, and again when I tried logging in with the official SecondLife viewer. I was playing perfectly fine just last night, I checked for emails about being banned or something - not that I'd be any less confused as I haven't done anything to be banned. I've tried googling for this error... and I've seen literally no one mention it; It's not even on the FAQ for error messages.
It says "If you feel this is an error, please contact support@secondlife.com", but I was hoping for a quicker solution as I have tiers to pay.
If anyone knows how I might be able to fix this, or at least what the cause might be, please let me know. Thank you in advance!