diff --git a/windows/nglib.vcxproj b/windows/nglib.vcxproj
index f671c68a..2cdb8938 100644
--- a/windows/nglib.vcxproj
+++ b/windows/nglib.vcxproj
@@ -201,7 +201,7 @@
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
-      <AdditionalIncludeDirectories>$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(BOOSTROOT);$(PYTHONROOT)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(SolutionDir)..\..\ext_libs\Python34\include\;$(SolutionDir)..\..\ext_libs\boost_1_56_0\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;_WIN32_WINNT=0x0502;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
@@ -216,8 +216,8 @@
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>pthreadVC2.lib;zdll.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;C:\Python34\libs;$(BOOSTROOT)\lib;$(PYTHONROOT)\libs;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>pthreadVC2.lib;zdll.lib;opengl32.lib;glu32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;$(SolutionDir)..\..\ext_libs\Python34\lib\Win32;$(SolutionDir)..\..\ext_libs\boost_1_56_0\lib\Win32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ManifestFile>$(OutDir)$(TargetFileName).intermediate.manifest</ManifestFile>
     </Link>
     <Manifest>
@@ -242,7 +242,7 @@
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
-      <AdditionalIncludeDirectories>$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(BOOSTROOT);$(PYTHONROOT)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(SolutionDir)..\..\ext_libs\Python34\include\;$(SolutionDir)..\..\ext_libs\boost_1_56_0\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;_WIN32_WINNT=0x0502;NOTCL;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
@@ -258,7 +258,7 @@
     </ClCompile>
     <Link>
       <AdditionalDependencies>pthreadVC2.lib;zlib1.lib;opengl32.lib;glu32.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\\lib;$(BOOSTROOT)\lib;$(PYTHONROOT)\libs;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\\lib;$(SolutionDir)..\..\ext_libs\Python34\lib\x64;$(SolutionDir)..\..\ext_libs\boost_1_56_0\lib\x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ManifestFile>$(OutDir)$(TargetFileName).intermediate.manifest</ManifestFile>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
@@ -296,8 +296,8 @@
       <DisableSpecificWarnings>4250</DisableSpecificWarnings>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>pthreadVC2.lib;zdll.lib;TKernel.lib;TKGeomBase.lib;TKMath.lib;TKG2d.lib;TKG3d.lib;TKXSBase.lib;TKOffset.lib;TKFillet.lib;TKShHealing.lib;TKMesh.lib;TKMeshVS.lib;TKTopAlgo.lib;TKGeomAlgo.lib;TKBool.lib;TKPrim.lib;TKBO.lib;TKIGES.lib;TKBRep.lib;TKSTEPBase.lib;TKSTEP.lib;TKSTL.lib;TKSTEPAttr.lib;TKSTEP209.lib;TKXDESTEP.lib;TKXDEIGES.lib;TKXCAF.lib;TKDCAF.lib;TKLCAF.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(CASROOT)\win32\vc8\lib;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(BOOSTROOT)\lib;$(PYTHONROOT)\libs;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>pthreadVC2.lib;zdll.lib;opengl32.lib;glu32.lib;TKernel.lib;TKGeomBase.lib;TKMath.lib;TKG2d.lib;TKG3d.lib;TKXSBase.lib;TKOffset.lib;TKFillet.lib;TKShHealing.lib;TKMesh.lib;TKMeshVS.lib;TKTopAlgo.lib;TKGeomAlgo.lib;TKBool.lib;TKPrim.lib;TKBO.lib;TKIGES.lib;TKBRep.lib;TKSTEPBase.lib;TKSTEP.lib;TKSTL.lib;TKSTEPAttr.lib;TKSTEP209.lib;TKXDESTEP.lib;TKXDEIGES.lib;TKXCAF.lib;TKDCAF.lib;TKLCAF.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>$(CASROOT)\win32\vc8\lib;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;$(SolutionDir)..\..\ext_libs\Python34\lib\Win32;$(SolutionDir)..\..\ext_libs\boost_1_56_0\lib\Win32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ManifestFile>$(OutDir)$(TargetFileName).intermediate.manifest</ManifestFile>
     </Link>
     <Manifest>
@@ -322,7 +322,7 @@
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
-      <AdditionalIncludeDirectories>$(CASROOT)\inc;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(SolutionDir)..\..\ext_libs\zlib\include;$(BOOSTROOT);$(PYTHONROOT)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(CASROOT)\inc;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\boost_1_56_0\;$(SolutionDir)..\..\ext_libs\Python34\lib\x64;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WNT;WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;Standard_EXPORT=;OCCGEOMETRY;_OCC64;_WIN32_WINNT=0x0502;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
@@ -337,8 +337,8 @@
       <DisableSpecificWarnings>4250</DisableSpecificWarnings>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>pthreadVC2.lib;zlib1.lib;TKernel.lib;TKGeomBase.lib;TKMath.lib;TKG2d.lib;TKG3d.lib;TKXSBase.lib;TKOffset.lib;TKFillet.lib;TKShHealing.lib;TKMesh.lib;TKMeshVS.lib;TKTopAlgo.lib;TKGeomAlgo.lib;TKBool.lib;TKPrim.lib;TKBO.lib;TKIGES.lib;TKBRep.lib;TKSTEPBase.lib;TKSTEP.lib;TKSTL.lib;TKSTEPAttr.lib;TKSTEP209.lib;TKXDESTEP.lib;TKXDEIGES.lib;TKXCAF.lib;TKLCAF.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(CASROOT)\win64\vc9\lib;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\\lib;$(BOOSTROOT)\lib;$(PYTHONROOT)\libs;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>pthreadVC2.lib;zlib1.lib;opengl32.lib;glu32.lib;TKernel.lib;TKGeomBase.lib;TKMath.lib;TKG2d.lib;TKG3d.lib;TKXSBase.lib;TKOffset.lib;TKFillet.lib;TKShHealing.lib;TKMesh.lib;TKMeshVS.lib;TKTopAlgo.lib;TKGeomAlgo.lib;TKBool.lib;TKPrim.lib;TKBO.lib;TKIGES.lib;TKBRep.lib;TKSTEPBase.lib;TKSTEP.lib;TKSTL.lib;TKSTEPAttr.lib;TKSTEP209.lib;TKXDESTEP.lib;TKXDEIGES.lib;TKXCAF.lib;TKLCAF.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>$(CASROOT)\win64\vc9\lib;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\\lib;$(SolutionDir)..\..\ext_libs\Python34\lib\x64;$(SolutionDir)..\..\ext_libs\boost_1_56_0\lib\x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ManifestFile>$(OutDir)$(TargetFileName).intermediate.manifest</ManifestFile>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
@@ -354,6 +354,7 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\libsrc\csg\python_csg.cpp" />
+    <ClCompile Include="..\libsrc\csg\vscsg.cpp" />
     <ClCompile Include="..\libsrc\csg\zrefine.cpp" />
     <ClCompile Include="..\libsrc\general\gzstream.cpp" />
     <ClCompile Include="..\libsrc\geom2d\python_geom2d.cpp" />
diff --git a/windows/postBuild_netgen.bat b/windows/postBuild_netgen.bat
index be7f269c..2efd175a 100644
--- a/windows/postBuild_netgen.bat
+++ b/windows/postBuild_netgen.bat
@@ -100,7 +100,7 @@ if /i "%BUILD_ARCH%" == "x64" (
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x64\tcl8.5" "%INSTALL_FOLDER%\lib\tcl8.5" /i /d /y /e /q
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x64\tix8.4.3" "%INSTALL_FOLDER%\lib\tix8.4.3" /i /d /y /e /q
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x64\tk8.5" "%INSTALL_FOLDER%\lib\tk8.5" /i /d /y /e /q
-   copy "%BOOSTROOT%\lib\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"
+   copy "%PROJ_DIR%..\..\ext_libs\boost_1_56_0\lib\x64\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"
    REM if errorlevel 1 goto externalInstallFailed
 )   
 
@@ -111,7 +111,7 @@ if /i "%BUILD_ARCH%" == "win32" (
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x86\tcl8.5" "%INSTALL_FOLDER%\lib\tcl8.5" /i /d /y /e /q
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x86\tix8.4.3" "%INSTALL_FOLDER%\lib\tix8.4.3" /i /d /y /e /q
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x86\tk8.5" "%INSTALL_FOLDER%\lib\tk8.5" /i /d /y /e /q
-   copy "%BOOSTROOT%\lib\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"   
+   copy "%PROJ_DIR%..\..\ext_libs\boost_1_56_0\lib\Win32\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"
    REM if errorlevel 1 goto externalInstallFailed
 )
 
diff --git a/windows/postBuild_nglib.bat b/windows/postBuild_nglib.bat
index be081398..fdb4d864 100644
--- a/windows/postBuild_nglib.bat
+++ b/windows/postBuild_nglib.bat
@@ -62,12 +62,12 @@ REM *** Copy the DLL and LIB Files into the install folder ***
 echo Installing required files into %INSTALL_FOLDER% ....
 if /i "%BUILD_ARCH%" == "win32" (
    xcopy "%PROJ_DIR%%PROJ_NAME%\%BUILD_TYPE%\%PROJ_EXEC%" "%INSTALL_FOLDER%\bin\" /i /d /y   
-   copy "%PROJ_DIR%%PROJ_NAME%\%BUILD_TYPE%\%PROJ_EXEC%" "%INSTALL_FOLDER%\bin\%PROJ_NAME%.pyd"   
+   REM copy "%PROJ_DIR%%PROJ_NAME%\%BUILD_TYPE%\%PROJ_EXEC%" "%INSTALL_FOLDER%\bin\%PROJ_NAME%.pyd"   
    if errorlevel 1 goto DLLInstallFailed
 )
 if /i "%BUILD_ARCH%" == "x64" (
    xcopy "%PROJ_DIR%%PROJ_NAME%\%BUILD_ARCH%\%BUILD_TYPE%\%PROJ_EXEC%" "%INSTALL_FOLDER%\bin\" /i /d /y
-   copy "%PROJ_DIR%%PROJ_NAME%\%BUILD_ARCH%\%BUILD_TYPE%\%PROJ_EXEC%" "%INSTALL_FOLDER%\bin\%PROJ_NAME%.pyd"   
+   REM copy "%PROJ_DIR%%PROJ_NAME%\%BUILD_ARCH%\%BUILD_TYPE%\%PROJ_EXEC%" "%INSTALL_FOLDER%\bin\%PROJ_NAME%.pyd"   
    if errorlevel 1 goto DLLInstallFailed
 )
 echo Installing %PROJ_EXEC%: Completed OK!!
@@ -84,13 +84,13 @@ if /i "%BUILD_ARCH%" == "x64" (
 if /i "%BUILD_ARCH%" == "x64" (
    xcopy "%PROJ_DIR%..\..\ext_libs\pthreads-Win32\dll\x64\pthreadVC2.dll" "%INSTALL_FOLDER%\bin" /i /d /y   
    xcopy "%PROJ_DIR%..\..\ext_libs\zlib\x64\lib\zlib1.dll" "%INSTALL_FOLDER%\bin" /i /d /y
-   copy "%BOOSTROOT%\lib\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"
+   copy "%PROJ_DIR%..\..\ext_libs\boost_1_56_0\lib\x64\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"
    if errorlevel 1 goto ExternalInstallFailed
 )
 if /i "%BUILD_ARCH%" == "win32" (
    xcopy "%PROJ_DIR%..\..\ext_libs\pthreads-Win32\dll\x86\pthreadVC2.dll" "%INSTALL_FOLDER%\bin" /i /d /y
    xcopy "%PROJ_DIR%..\..\ext_libs\zlib\x86\lib\zlib1.dll" "%INSTALL_FOLDER%\bin" /i /d /y
-   copy "%BOOSTROOT%\lib\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"   
+   copy "%PROJ_DIR%..\..\ext_libs\boost_1_56_0\lib\Win32\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"   
    if errorlevel 1 goto ExternalInstallFailed
 )