diff --git a/AutoNester.cpp b/AutoNester.cpp
index c1a5208..44a7c17 100644
--- a/AutoNester.cpp
+++ b/AutoNester.cpp
@@ -265,6 +265,13 @@ AutoNester::AddPart( int nPartId, const PolyArc& Outline, bool bCanFlip, bool bC
   // aggiungo contorno
    vector<CNS_Element> vElem ;
    GetCNSPath( Outline, 0, 0, vElem) ;
+   if ( vElem.size() <= 1)
+      return false ;
+   else if ( vElem.size() == 2) {
+      if ( abs( vElem[0].left_deflection) < 10 * EPS_SMALL  &&
+           abs( vElem[1].left_deflection) < 10 * EPS_SMALL)
+         return false ;
+   }
    CNS_PartPtr pPart = CNS_AddPart( m_pOrder, nCount, int( vElem.size()), vElem.data()) ;
    if ( pPart == nullptr)
       return false ;
diff --git a/EgtNesting.rc b/EgtNesting.rc
index cfb1280..c421c4f 100644
Binary files a/EgtNesting.rc and b/EgtNesting.rc differ