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, 02:20, 23 June 2010
The error code you received indicates the system is attempting to load unauthorized software. Unauthorized modifications to save data or program files may impair game play or the Wii console and should be removed.
[http://www.nintendo.com/consumer/wfc/en_na/ds/results.jsp?error_code=004&system=Wii&locale=en_US Nintedo Error 004]