diff --git a/BtlGeomCoStru.h b/BtlGeomCoStru.h
index 991cbb2..f59fe57 100644
--- a/BtlGeomCoStru.h
+++ b/BtlGeomCoStru.h
@@ -51,8 +51,8 @@ static const std::string IKEY_AUXID = "AUXID" ;
 static const std::string IKEY_START_FACE = "FCS" ;
 static const std::string IKEY_END_FACE = "FCE" ;
 // costanti di approssimazione per curve
-const double CRV_LIN_APPROX = 0.1 ;
-const double CRV_ANG_APPROX_DEG = 30.0 ;
+const double CRV_LIN_APPROX = 0.02 ;
+const double CRV_ANG_APPROX_DEG = 22.5 ;
 // minima dimensione trasversale di faccia per non essere eliminata
 const double FACE_MIN_CROSS_DIM = 1.0 ;
 // raggio fresa di default
diff --git a/BtlGeomProc.cpp b/BtlGeomProc.cpp
index cd01ed8..44eb55a 100644
--- a/BtlGeomProc.cpp
+++ b/BtlGeomProc.cpp
@@ -763,9 +763,9 @@ BtlGeom::AddCut( int nGroup, int nProc, int nSide, const string& sDes, int nProc
    if ( ! CreatePolygonInBox( ptP, vtN, nSide, plyCut))
       return false ;
    if ( plyCut.GetSideCount() < 3) {
-      string sOut = "  Warning : Empty Process (" + ToString( nGroup) + "-" + ToString( nProc) + "-" + ToString( nSide) +
+      string sOut = "  Warning : Empty Process (" + ToString( nGroup) + "-" + ToString( nProc, 3) + "-" + ToString( nSide) +
                      ") on line " + ToString( m_nBtlLine) ;
-      LOG_INFO( GetEExLogger(), sOut.c_str())
+      LOG_WARN( GetEExLogger(), sOut.c_str())
       return true ;
    }
   // creo la trimesh con questo contorno
@@ -2007,8 +2007,12 @@ BtlGeom::AddDrill( int nGroup, int nProc, int nSide, const string& sDes, int nPr
    Point3d ptStart = ptP ;
    Point3d ptEnd = ptP - vtN * dDepth ;
   // limito i punti, tenendo conto del raggio
-   if ( ! TrimSegmentWithBox( ptStart, ptEnd, dRad))
-      return false ;
+   if ( ! TrimSegmentWithBox( ptStart, ptEnd, dRad)) {
+      string sOut = "  Warning : Empty Process (" + ToString( nGroup) + "-" + ToString( nProc, 3) + "-" + ToString( nSide) +
+                     ") on line " + ToString( m_nBtlLine) ;
+      LOG_WARN( GetEExLogger(), sOut.c_str())
+      return true ;
+   }
    dDepth = ( ptStart - ptEnd) * vtN ;
   // creo la circonferenza
    PtrOwner<ICurveArc> pArc( CreateCurveArc()) ;
@@ -3152,9 +3156,9 @@ BtlGeom::AddMarking( int nGroup, int nProc, int nSide, const string& sDes, int n
    }
   // altrimenti emetto segnalazione 
    else {
-      string sOut = "  Warning : Empty Process (" + ToString( nGroup) + "-" + ToString( nProc) + "-" + ToString( nSide) + 
+      string sOut = "  Warning : Empty Process (" + ToString( nGroup) + "-" + ToString( nProc, 3) + "-" + ToString( nSide) + 
                      ") on line " + ToString( m_nBtlLine) ;
-      LOG_INFO( GetEExLogger(), sOut.c_str())
+      LOG_WARN( GetEExLogger(), sOut.c_str())
    }
 
    return true ;
diff --git a/EgtExchange.vcxproj b/EgtExchange.vcxproj
index ce250a2..1a86739 100644
--- a/EgtExchange.vcxproj
+++ b/EgtExchange.vcxproj
@@ -155,14 +155,14 @@ copy $(TargetPath) \EgtProg\DllD64</Command>
       <OmitFramePointers>true</OmitFramePointers>
       <EnableFiberSafeOptimizations>true</EnableFiberSafeOptimizations>
       <EnableParallelCodeGeneration>true</EnableParallelCodeGeneration>
+      <WholeProgramOptimization>false</WholeProgramOptimization>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
       <GenerateDebugInformation>false</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <AdditionalDependencies>C:\EgtDev\Extern\OxySec\Lib\x32\xnodus32.obj;%(AdditionalDependencies)</AdditionalDependencies>
-      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
+      <LinkTimeCodeGeneration>Default</LinkTimeCodeGeneration>
     </Link>
     <PostBuildEvent>
       <Command>copy $(TargetDir)$(TargetName).lib \EgtDev\Lib\
@@ -187,14 +187,14 @@ copy $(TargetPath) \EgtProg\Dll32</Command>
       <OmitFramePointers>true</OmitFramePointers>
       <EnableFiberSafeOptimizations>true</EnableFiberSafeOptimizations>
       <EnableParallelCodeGeneration>true</EnableParallelCodeGeneration>
+      <WholeProgramOptimization>false</WholeProgramOptimization>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
       <GenerateDebugInformation>false</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <AdditionalDependencies>C:\EgtDev\Extern\OxySec\Lib\x64\xnodus.obj;%(AdditionalDependencies)</AdditionalDependencies>
-      <LinkTimeCodeGeneration>UseLinkTimeCodeGeneration</LinkTimeCodeGeneration>
+      <LinkTimeCodeGeneration>Default</LinkTimeCodeGeneration>
     </Link>
     <PostBuildEvent>
       <Command>copy $(TargetDir)$(TargetName).lib \EgtDev\Lib\
diff --git a/ImportBtl.cpp b/ImportBtl.cpp
index 0a5be86..cac0b5d 100644
--- a/ImportBtl.cpp
+++ b/ImportBtl.cpp
@@ -748,7 +748,7 @@ ImportBtl::GetProcessParams( const string& sText, const string& sProcType,
       if ( ! GetParamP( sText, vnDPar[i], vdPar[i])) {
          string sOut = "  Info : P" + ToString( vnDPar[i], 2) + " missing in Process (" + sProcType +
                        ") on line " + ToString( m_theScanner.GetCurrLineNbr()) ;
-         LOG_INFO( GetEExLogger(), sOut.c_str())
+         LOG_DBG_INFO( GetEExLogger(), sOut.c_str())
       }
    }
   // leggo l'eventuale parametro stringa
@@ -756,7 +756,7 @@ ImportBtl::GetProcessParams( const string& sText, const string& sProcType,
       if ( ! GetParamP( sText, nSPar, sPar)) {
          string sOut = "  Info : P" + ToString( nSPar, 2) + " missing in Process (" + sProcType +
                        ") on line " + ToString( m_theScanner.GetCurrLineNbr()) ;
-         LOG_INFO( GetEExLogger(), sOut.c_str())
+         LOG_DBG_INFO( GetEExLogger(), sOut.c_str())
       }
    }
 
diff --git a/ImportDxfBlocks.cpp b/ImportDxfBlocks.cpp
index 388caf7..45d6a09 100644
--- a/ImportDxfBlocks.cpp
+++ b/ImportDxfBlocks.cpp
@@ -52,7 +52,7 @@ ImportDxf::ReadBlocks( bool& bFileEnd)
          else {
             string sOut = "ImportDxf : Skip entity " + sEntName +
                           " at line " + ToString( m_theScanner.GetCurrLineNbr()) ;
-            LOG_INFO( GetEExLogger(), sOut.c_str())
+            LOG_WARN( GetEExLogger(), sOut.c_str())
             if ( ! SkipEntity( bFileEnd))
                bOkLoc = false ;
          }
diff --git a/ImportDxfEnts.cpp b/ImportDxfEnts.cpp
index fb2bb62..56f093a 100644
--- a/ImportDxfEnts.cpp
+++ b/ImportDxfEnts.cpp
@@ -57,7 +57,7 @@ ImportDxf::ReadEntities( bool& bFileEnd)
          else {
             string sOut = "ImportDxf : Skip entity " + sEntName +
                           " at line " + ToString( m_theScanner.GetCurrLineNbr()) ;
-            LOG_INFO( GetEExLogger(), sOut.c_str())
+            LOG_WARN( GetEExLogger(), sOut.c_str())
             if ( ! SkipEntity( bFileEnd))
                bOkLoc = false ;
          }