Improves the default Blizzard error frame, increases the total size, adds a first/last button as well as a slash command to access the error frame if you close it. It will queue up any error it sees until PLAYER_LOGIN fires then it will shunt them all to the Blizzard error frame.
Slash commands: /error (/errorframes) /error # will open the error frame on the passed error number, if no error number is passed it will open the last error.