Compare http://www.thebluealliance.com/events/ne and http://frc-districtrankings.usfirst.org/NE
Are you sure the calcs have run for Week 5 events?
Oh I think this has to do with how the inverse error function gets computed.
http://www.usfirst.org/sites/default/files/uploadedFiles/Robotics_Programs/FRC/Game_and_Season__Info/2015/FRC_District_Standard_Points_Ranking_System_2015%20Summary.pdf
Most of this is fixed. The only errors should now come from teams that played in outside districts.
Compare http://www.thebluealliance.com/events/ne and http://frc-districtrankings.usfirst.org/NE
Are you sure the calcs have run for Week 5 events?