diff --git a/LuaLibs/CalcToolPath.lua b/LuaLibs/CalcToolPath.lua
index 7712718..fbead3e 100644
--- a/LuaLibs/CalcToolPath.lua
+++ b/LuaLibs/CalcToolPath.lua
@@ -403,7 +403,9 @@ local function AddRetraction( nCrvId, vtSlicing, dCoastingLen, dWipeLen, dWipeDi
          for nIdx = 1, nCrvCnt - 2 do
             EgtAddCurveCompoCurve( nCopyId, nCopyId + nIdx)
          end
-         EgtErase( nCopyId + nCrvCnt - 1)
+         if nCrvCnt > 1 then 
+            EgtErase( nCopyId + nCrvCnt - 1)
+         end
       end
       EgtCloseCurveCompo( nCopyId)
       EgtChangeClosedCurveStartPoint( nCopyId, ptNewStart, GDB_RT.GLOB)
diff --git a/Version.lua b/Version.lua
index 747317e..6329aa7 100644
--- a/Version.lua
+++ b/Version.lua
@@ -1,4 +1,4 @@
--- Version.lua by Egaltech s.r.l. 2024/02/13
+-- Version.lua by Egaltech s.r.l. 2024/05/06
 -- Gestione della versione di 3dPrinting
 
-VERSION = '2.6c1'
\ No newline at end of file
+VERSION = '2.6e1'
\ No newline at end of file