If you use Max just check you have 2 vertexs together but not colapse and you need to colapse them.and that is all wath cause it

I don`t use max.

I think it does look like dolphing mentions above xantor that the verts are not welded together. That would give you open edges that would show up like that after grouping. You might want to take the offending part into your modeler and double check that the verts at both ends of that edge are welded, or weld the edges together.

If they are....I can't really say what might be causing this....I've occasionally seen similar funky things if someone splits the verts in UVmapper...so it could just be something got lost in translation somewhere between programs.

My modeller doesn`t do vertice welding. :m_sadblink:

Looks like a  single Vertex or 2 vertices poly, just delete that poly it isn't needed. Depending on your modeller you should be able to lasso just that single line.

Hi Xantor all of them are ok ,you have to fine how to check and weld o remove the extra vertices on your mesh and just in case what program you use?

I use anim8or and an older program called imagine, neither of them have that kind of vertice editing, but it is not a big problem, the vertices don`t show up in renders.

Quote - I use anim8or and an older program called imagine, neither of them have that kind of vertice editing ...

Anim8or has vertex editing, see Chapter 3 of the PDF manual, specifically the section titled "Merging Points" (which is what other modellers call welding).

OK, thank you.