diff --git a/EgtMachKernel.sln b/EgtMachKernel.sln
index 70e1d53..1171052 100644
--- a/EgtMachKernel.sln
+++ b/EgtMachKernel.sln
@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28307.645
+# Visual Studio Version 17
+VisualStudioVersion = 17.12.35527.113 d17.12
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "EgtMachKernel", "EgtMachKernel.vcxproj", "{0BD58222-92F3-48B2-B656-4497D1956874}"
 EndProject
diff --git a/Milling.cpp b/Milling.cpp
index e79d1d3..9f401af 100644
--- a/Milling.cpp
+++ b/Milling.cpp
@@ -1953,7 +1953,7 @@ Milling::ProcessPath( int nPathId, int nPvId, int nClId)
       return false ;
 
   // recupero eventuale flag di inizio forzato fuori dal grezzo
-   int nStartOutRaw ;
+   int nStartOutRaw = 0 ;
    FromString( ExtractInfo( m_Params.m_sUserNotes, "OutRaw="), nStartOutRaw) ;
    m_bStartOutRaw = (( nStartOutRaw & 1) != 0) ;
    m_bEndOutRaw = (( nStartOutRaw & 2) != 0) ;
diff --git a/Pocketing.cpp b/Pocketing.cpp
index 0728b88..545f8f1 100644
--- a/Pocketing.cpp
+++ b/Pocketing.cpp
@@ -1682,6 +1682,7 @@ Pocketing::ProcessPath( int nPathId, int nPvId, int nClId)
    m_bOpenOutRaw = ( FromString( ExtractInfo( m_Params.m_sUserNotes, "OpenOutRaw="), nOpenOutRaw)  &&  nOpenOutRaw != 0) ;
 
   // recupero eventuale minima lunghezza di attacco su lato aperto
+   m_dOpenMinSafe = 0 ;
    FromString( ExtractInfo( m_Params.m_sUserNotes, "OpenMinSafe="), m_dOpenMinSafe) ;
 
   // se richiesta anteprima
diff --git a/PocketingNT.cpp b/PocketingNT.cpp
index e6a2669..c274699 100644
--- a/PocketingNT.cpp
+++ b/PocketingNT.cpp
@@ -2171,6 +2171,7 @@ PocketingNT::ProcessPath( int nPathId, int nPvId, int nClId)
    m_bOpenOutRaw = ( FromString( ExtractInfo( m_Params.m_sUserNotes, "OpenOutRaw="), nOpenOutRaw)  &&  nOpenOutRaw != 0) ;
 
   // recupero eventuale minima lunghezza di attacco su lato aperto
+   m_dOpenMinSafe = 0 ;
    FromString( ExtractInfo( m_Params.m_sUserNotes, "OpenMinSafe="), m_dOpenMinSafe) ;
 
   // se richiesta anteprima
diff --git a/Sawing.cpp b/Sawing.cpp
index 3a7ee11..0807972 100644
--- a/Sawing.cpp
+++ b/Sawing.cpp
@@ -1868,10 +1868,10 @@ Sawing::ProcessLine( const ICurve* pCrvP, const ICurveLine* pLineC, const ICurve
       if ( ! sFsta.empty()) {
          string sLen, sPu ;
          SplitFirst( sFsta, ",", sLen, sPu) ;
-         FromString( sLen, FvVar.dLenStart) ;
-         FvVar.dLenStart = max( FvVar.dLenStart, 0.) ;
-         FromString( sPu, FvVar.dPuStart) ;
-         FvVar.dPuStart = max( FvVar.dPuStart, 0.) ;
+         if ( FromString( sLen, FvVar.dLenStart))
+            FvVar.dLenStart = max( FvVar.dLenStart, 0.) ;
+         if ( FromString( sPu, FvVar.dPuStart))
+            FvVar.dPuStart = max( FvVar.dPuStart, 0.) ;
       }
    }
    if ( pCrvN == nullptr) {
@@ -1879,10 +1879,10 @@ Sawing::ProcessLine( const ICurve* pCrvP, const ICurveLine* pLineC, const ICurve
       if ( ! sFend.empty()) {
          string sLen, sPu ;
          SplitFirst( sFend, ",", sLen, sPu) ;
-         FromString( sLen, FvVar.dLenEnd) ;
-         FvVar.dLenEnd = max( FvVar.dLenEnd, 0.) ;
-         FromString( sPu, FvVar.dPuEnd) ;
-         FvVar.dPuEnd = max( FvVar.dPuEnd, 0.) ;
+         if ( FromString( sLen, FvVar.dLenEnd))
+            FvVar.dLenEnd = max( FvVar.dLenEnd, 0.) ;
+         if ( FromString( sPu, FvVar.dPuEnd))
+            FvVar.dPuEnd = max( FvVar.dPuEnd, 0.) ;
       }
    }
 
diff --git a/SimulatorMP.cpp b/SimulatorMP.cpp
index 50414a1..f69542a 100644
--- a/SimulatorMP.cpp
+++ b/SimulatorMP.cpp
@@ -2619,11 +2619,11 @@ SimulatorMP::ExecCmdData( int& nStatus)
          bOk = m_pMachine->LuaSetGlobVar( CmdCurr.sPar, bVal) ;
       } break ;
       case 2 :
-      {  int nVal ; FromString( CmdCurr.sPar2, nVal) ;
+      {  int nVal = 0 ; FromString( CmdCurr.sPar2, nVal) ;
          bOk = m_pMachine->LuaSetGlobVar( CmdCurr.sPar, nVal) ;
       } break ;
       case 3 :
-      {  double dVal ; FromString( CmdCurr.sPar2, dVal) ;
+      {  double dVal = 0 ; FromString( CmdCurr.sPar2, dVal) ;
          bOk = m_pMachine->LuaSetGlobVar( CmdCurr.sPar, dVal) ;
       } break ;
       case 4 :