vector error

[Mulata]

Hi, I have this error issue with only one composition. I don`t understand the cause, it seams to make this error in a vector sharp point on the movie render. When I transform it into a curve disappear but appears in another sharp point always in the arms. Here's the image of the render Any ideas?

[Genete]

Is the vector shape in its individual layer? Maybe the zdepth sort is the cause of that.
Can you isolate the shapes and the problem continues? (for example, remove all other layers except the arm one)
Can you share the sample buggy file?
-G

[Mulata]

thank you very much for your answer! there is only one shape in the layer and the error occurs only with the sharp points. if I curve the point I can avoid it but it's a mistery why ...