diff --git a/Controller.vb b/Controller.vb
index 9257d6b..2a6b6dd 100644
--- a/Controller.vb
+++ b/Controller.vb
@@ -3954,20 +3954,17 @@ Public Class Controller
          m_Scene.SetStatusSelPoint(False)
          Dim nId As Integer = EgtGetLastSelectedObj()
          EgtCurveLength(nId, m_dPrev)
-         Dim ptStart As Point3d
-         EgtStartPoint(nId, ptStart)
-         ptStart = ptStart.Glob(nId)
-         Dim ptEnd As Point3d
-         EgtEndPoint(nId, ptEnd)
-         ptEnd = ptEnd.Glob(nId)
-         If ((ptStart - m_ptLastSel).SqLen() <= (ptEnd - m_ptLastSel).SqLen()) Then
+         Dim bStart As Boolean = True
+         EgtCurveNearestExtremityToPoint(nId, m_ptLastSel.Loc(nId), bStart)
+         If bStart Then
             m_bLast = True
-            m_ptP1 = ptStart
+            m_ptP1 = m_ptLastSel
             EgtStartVector(nId, m_vtCont)
             m_vtCont = -m_vtCont.Glob(nId)
          Else
             m_bLast = False
-            m_ptP1 = ptEnd
+            EgtEndPoint(nId, m_ptP1)
+            m_ptP1 = m_ptLastSel
             EgtEndVector(nId, m_vtCont)
             m_vtCont = m_vtCont.Glob(nId)
          End If
diff --git a/EgtInterface.vb b/EgtInterface.vb
index 7d31dc7..9a3233f 100644
--- a/EgtInterface.vb
+++ b/EgtInterface.vb
@@ -1767,6 +1767,10 @@ Public Function EgtFrame(ByVal nId As Integer, ByVal nRefId As Integer, ByRef fr
    End If
 End Function
 
+<DllImport(EgtIntDll, CharSet:=CharSet.Unicode)>
+Public Function EgtCurveDomain(ByVal nId As Integer, ByRef dStart As Double, ByRef dEnd As Double) As Boolean
+End Function
+
 <DllImport(EgtIntDll, CharSet:=CharSet.Unicode)>
 Public Function EgtCurveLength(ByVal nId As Integer, ByRef dLen As Double) As Boolean
 End Function
@@ -1778,6 +1782,10 @@ Public Function EgtCurveLengthAtPoint(ByVal nId As Integer, ByVal ptOn As Point3
    Return EgtCurveLengthAtPoint(nId, ptOn, 0, dLen)
 End Function
 
+<DllImport(EgtIntDll, CharSet:=CharSet.Unicode)>
+Public Function EgtCurveNearestExtremityToPoint(ByVal nId As Integer, ByRef ptP As Point3d, ByRef bStart As Boolean) As Boolean
+End Function
+
 <DllImport(EgtIntDll, CharSet:=CharSet.Unicode)>
 Public Function EgtCurveExtrusion(ByVal nId As Integer, ByVal nRefId As Integer, ByRef VtExtr As Vector3d) As Boolean
 End Function
@@ -1790,7 +1798,7 @@ Public Function EgtCurveThickness(ByVal nId As Integer, ByRef dThick As Double)
 End Function
 
 <DllImport(EgtIntDll, CharSet:=CharSet.Unicode)>
-Public Function EgtGetMinDistPointCurve(ByRef ptP As Point3d, ByVal nId As Integer, ByRef dDist As Double) As Boolean
+Public Function EgtGetMinDistPointCurve(ByRef ptP As Point3d, ByVal nId As Integer, ByRef dDist As Double, ByRef dU As Double) As Boolean
 End Function
 
 <DllImport(EgtIntDll, CharSet:=CharSet.Unicode)>
diff --git a/My Project/AssemblyInfo.vb b/My Project/AssemblyInfo.vb
index 3bf312a..d83cf0c 100644
--- a/My Project/AssemblyInfo.vb	
+++ b/My Project/AssemblyInfo.vb	
@@ -46,5 +46,5 @@ Imports System.Runtime.InteropServices
 ' utilizzando l'asterisco (*) come descritto di seguito:
 ' <Assembly: AssemblyVersion("1.0.*")> 
 
-<Assembly: AssemblyVersion("1.6.5.6")> 
-<Assembly: AssemblyFileVersion("1.6.5.6")> 
+<Assembly: AssemblyVersion("1.6.6.1")> 
+<Assembly: AssemblyFileVersion("1.6.6.1")>