Problem of triangulation with Cloud V6 script

[alexcyclo]

The script is importing well my points from this CSV but stop creating triangle at one point.

console is saying :
Error: #<ArgumentError: Points are not planar>
(eval):564:in add_face' (eval):564:in triangulate_cloud'
(eval):558:in upto' (eval):558:in triangulate_cloud'
(eval):478:in draw_geometry' (eval):277:in onLButtonUp'
(eval):564

I use the update of cloud_V6 (there : http://www.sketchucation.com/forums/scf/viewtopic.php?f=180&t=15807 )
Here the csv table ( http://dl.getdropbox.com/u/473375/Esaau%20du%20soir3.csv )