multi section catia

[Galbert99]

Hi guys,
I'm drawing a compressor blade in Catia v5 but multi section doesn't work and I don't understand why. I forward a picture of what I see

 

[ShataCastings]

Try to use guides instead of coupling

 

[Galbert99]

Thank you for answer. It doesn't work also with guides, it tells me that the extrusion of a vertex of the profile leads to a cusp, I've tried also to change closing points