diff --git a/src/Tools/WinVersion.py b/src/Tools/WinVersion.py
new file mode 100644
index 000000000..48884686a
--- /dev/null
+++ b/src/Tools/WinVersion.py
@@ -0,0 +1,49 @@
+#! python
+# -*- coding: utf-8 -*-
+# (c) 2012 Juergen Riegel LGPL
+#
+# Script to create files used in Windows build
+# uses SubWCRev.py for version detection#
+
+import SubWCRev,getopt,sys,string
+
+def main():
+
+    input=""
+    output="."
+    dir="."
+    
+    try:
+        opts, args = getopt.getopt(sys.argv[1:], "dso:", ["dir=","src=","out="])
+    except getopt.GetoptError:
+        pass
+
+    for o, a in opts:
+        if o in ("-d", "--dir"):
+            dir = a
+        if o in ("-s", "--src"):
+            input = a
+        if o in ("-o", "--out"):
+            output = a
+    git = SubWCRev.GitControl()
+    
+    if(git.extractInfo(input)):
+        print git.hash
+        print git.branch
+        print git.rev[0:4]
+        print git.date
+        print git.url
+        print input
+        print output
+        
+        f = open(input,'r')
+        o = open(output,'w')
+        for line in f.readlines():
+            line = string.replace(line,'$WCREV$',git.rev[0:4])
+            line = string.replace(line,'$WCDATE$',git.date)
+            line = string.replace(line,'$WCURL$',git.url)
+            o.write(line)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/src/WindowsInstaller/BuildInstaller.bat b/src/WindowsInstaller/BuildInstaller.bat
index 384f476d6..d779137f6 100644
--- a/src/WindowsInstaller/BuildInstaller.bat
+++ b/src/WindowsInstaller/BuildInstaller.bat
@@ -4,9 +4,12 @@ if NOT DEFINED WIXDIR set WIXDIR=C:\Program Files (x86)\Windows Installer XML v3
 rem in order to build an x64 installer set PLATFORM to x64 
 if not defined PLATFORM set PLATFORM=x86
 
-"C:\Program Files\TortoiseSVN\bin\SubWCRev.exe" ..\.. Version.wxi.in Version.wxi
-"C:\Program Files\TortoiseSVN\bin\SubWCRev.exe" ..\.. CopyRelease.bat.in CopyRelease.bat
-"C:\Program Files\TortoiseSVN\bin\SubWCRev.exe" ..\.. ..\Build\Version.h.in ..\Build\Version.h
+C:\Python26\python.exe ../Tools/WinVersion.py --dir=../.. --src=Version.wxi.in --out=Version.wxi
+C:\Python26\python.exe ../Tools/WinVersion.py --dir=../.. --src=CopyRelease.bat.in --out=CopyRelease.bat
+C:\Python26\python.exe ../Tools/WinVersion.py --dir=../.. --src=../Build/Version.h.in   --out=../Build/Version.h
+rem "C:\Program Files\TortoiseSVN\bin\SubWCRev.exe" ..\.. Version.wxi.in Version.wxi
+rem "C:\Program Files\TortoiseSVN\bin\SubWCRev.exe" ..\.. CopyRelease.bat.in CopyRelease.bat
+rem "C:\Program Files\TortoiseSVN\bin\SubWCRev.exe" ..\.. ..\Build\Version.h.in ..\Build\Version.h
 
 SET /P M=Reebuild and press enter 
 
diff --git a/src/WindowsInstaller/CopyRelease.bat.in b/src/WindowsInstaller/CopyRelease.bat.in
index 0c21c8b68..10b1758f6 100644
--- a/src/WindowsInstaller/CopyRelease.bat.in
+++ b/src/WindowsInstaller/CopyRelease.bat.in
@@ -1,4 +1,4 @@
 
 
-copy FreeCAD.msi FreeCAD_0.12.$WCREV$_x86_unstable_setup.msi
-copy FreeCAD.7z  FreeCAD_0.12.$WCREV$_x86_unstable_bin.7z
\ No newline at end of file
+copy FreeCAD.msi FreeCAD_0.13.$WCREV$_x86_unstable_setup.msi
+copy FreeCAD.7z  FreeCAD_0.13.$WCREV$_x86_unstable_bin.7z
\ No newline at end of file
diff --git a/src/WindowsInstaller/FreeCAD.wxs b/src/WindowsInstaller/FreeCAD.wxs
index c6ebcc680..a9c15ed40 100644
--- a/src/WindowsInstaller/FreeCAD.wxs
+++ b/src/WindowsInstaller/FreeCAD.wxs
@@ -27,9 +27,9 @@
 	<?define RTMProductVersion="$(var.FCVersionMajor).$(var.FCVersionMinor)" ?>
 	<?define ProductVersion="$(var.FCVersionMajor).$(var.FCVersionMinor).$(var.FCVersionRevision)" ?>
 	<!-- this is the product UID and have to change for every x.y Version  -->
-	<?define ProductCode="{81abc4a0-de63-11de-8a39-0800200c9a66}"?>
+	<?define ProductCode="{2b2b5d2b-0f01-410b-843b-8f437fd75fbf}"?>
 	<!-- this is the product upgrade UID and have to change for every x.y Version  -->
-	<?define UpgradeCode="{b921eb30-de63-11de-8a39-0800200c9a66}"?>
+	<?define UpgradeCode="{2b2b5d2b-0f01-410b-843b-8f437fd75fbf}"?>
 	<?define PackageCode="{????????-????-????-????-????????????}"?>
 
 
diff --git a/src/WindowsInstaller/Version.wxi.in b/src/WindowsInstaller/Version.wxi.in
index 94688a589..9d49f2aaa 100644
--- a/src/WindowsInstaller/Version.wxi.in
+++ b/src/WindowsInstaller/Version.wxi.in
@@ -1,5 +1,5 @@
 <Include>
    <?define FCVersionMajor =0 ?>
-   <?define FCVersionMinor =12 ?>
+   <?define FCVersionMinor =13 ?>
    <?define FCVersionRevision =$WCREV$ ?>
 </Include>