Shipped a new version of a live trading system that was still pointing to non live permissions. Head of trading couldn't use the system - lots of swearing and

Shipped a new version of a live trading system that was still pointing to non live permissions. Head of trading couldn't use the system - lots of swearing and name calling entailed, but all was forgiven/forgotten a few days later. I took the blame for a junior member of my team not understanding the issues of the different dev/staging/live environments.