diff --git a/LuaLibs/CalcSlices.lua b/LuaLibs/CalcSlices.lua
index ee66bf7..a83932c 100644
--- a/LuaLibs/CalcSlices.lua
+++ b/LuaLibs/CalcSlices.lua
@@ -1000,6 +1000,7 @@ local function SlicingWithSolid( nStmId, vZSlices, dDeltaZStart, dZmin, frSlicin
          
          if #vOpenId > 1 then
             EgtOutLog( 'Error : hole in solid (layer '.. EgtNumToString( nLayCnt) ..') - CalcSlices')
+            table.insert( s_vErr, nLayCnt)
          end
       else
          
diff --git a/Version.lua b/Version.lua
index d80d882..19186b2 100644
--- a/Version.lua
+++ b/Version.lua
@@ -1,4 +1,4 @@
 -- Version.lua by Egaltech s.r.l. 2024/05/06
 -- Gestione della versione di 3dPrinting
 
-VERSION = '2.6k1'
\ No newline at end of file
+VERSION = '2.6l1'
\ No newline at end of file