diff --git a/collects/repos-time-stamp/stamp.ss b/collects/repos-time-stamp/stamp.ss
index 6385acb46b..2b394f7ea5 100644
--- a/collects/repos-time-stamp/stamp.ss
+++ b/collects/repos-time-stamp/stamp.ss
@@ -1 +1 @@
-#lang scheme/base (provide stamp) (define stamp "16nov2009")
+#lang scheme/base (provide stamp) (define stamp "18nov2009")
diff --git a/src/worksp/mred/mred.manifest b/src/worksp/mred/mred.manifest
index 551555fc3e..94bbe8aa8b 100644
--- a/src/worksp/mred/mred.manifest
+++ b/src/worksp/mred/mred.manifest
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?> 
 <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"> 
 <assemblyIdentity 
-version="4.2.2.6" 
+version="4.2.3.1" 
 processorArchitecture="X86" 
 name="Org.PLT-Scheme.MrEd" 
 type="win32" 
diff --git a/src/worksp/mred/mred.rc b/src/worksp/mred/mred.rc
index f190ce79f1..06654261a0 100644
--- a/src/worksp/mred/mred.rc
+++ b/src/worksp/mred/mred.rc
@@ -20,8 +20,8 @@ APPLICATION             ICON    DISCARDABLE     "mred.ico"
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 4,2,2,6
- PRODUCTVERSION 4,2,2,6
+ FILEVERSION 4,2,3,1
+ PRODUCTVERSION 4,2,3,1
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -39,11 +39,11 @@ BEGIN
             VALUE "CompanyName", "PLT Scheme Inc.\0"
             VALUE "FileDescription", "PLT Scheme GUI application\0"
             VALUE "InternalName", "MrEd\0"
-            VALUE "FileVersion", "4, 2, 2, 6\0"
+            VALUE "FileVersion", "4, 2, 3, 1\0"
             VALUE "LegalCopyright", "Copyright © 1995-2009\0"
             VALUE "OriginalFilename", "MrEd.exe\0"
             VALUE "ProductName", "PLT Scheme\0"
-            VALUE "ProductVersion", "4, 2, 2, 6\0"
+            VALUE "ProductVersion", "4, 2, 3, 1\0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/src/worksp/mzcom/mzcom.rc b/src/worksp/mzcom/mzcom.rc
index 5911f093d7..3d88f820b9 100644
--- a/src/worksp/mzcom/mzcom.rc
+++ b/src/worksp/mzcom/mzcom.rc
@@ -53,8 +53,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 4,2,2,6
- PRODUCTVERSION 4,2,2,6
+ FILEVERSION 4,2,3,1
+ PRODUCTVERSION 4,2,3,1
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -70,12 +70,12 @@ BEGIN
         BLOCK "040904b0"
         BEGIN
             VALUE "FileDescription", "MzCOM Module"
-            VALUE "FileVersion", "4, 2, 2, 6"
+            VALUE "FileVersion", "4, 2, 3, 1"
             VALUE "InternalName", "MzCOM"
             VALUE "LegalCopyright", "Copyright 2000-2009 PLT (Paul Steckler)"
             VALUE "OriginalFilename", "MzCOM.EXE"
             VALUE "ProductName", "MzCOM Module"
-            VALUE "ProductVersion", "4, 2, 2, 6"
+            VALUE "ProductVersion", "4, 2, 3, 1"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/src/worksp/mzcom/mzobj.rgs b/src/worksp/mzcom/mzobj.rgs
index 64d369c3d3..43148505b3 100644
--- a/src/worksp/mzcom/mzobj.rgs
+++ b/src/worksp/mzcom/mzobj.rgs
@@ -1,19 +1,19 @@
 HKCR
 {
-	MzCOM.MzObj.4.2.2.6 = s 'MzObj Class'
+	MzCOM.MzObj.4.2.3.1 = s 'MzObj Class'
 	{
 		CLSID = s '{A3B0AF9E-2AB0-11D4-B6D2-0060089002FE}'
 	}
 	MzCOM.MzObj = s 'MzObj Class'
 	{
 		CLSID = s '{A3B0AF9E-2AB0-11D4-B6D2-0060089002FE}'
-		CurVer = s 'MzCOM.MzObj.4.2.2.6'
+		CurVer = s 'MzCOM.MzObj.4.2.3.1'
 	}
 	NoRemove CLSID
 	{
 		ForceRemove {A3B0AF9E-2AB0-11D4-B6D2-0060089002FE} = s 'MzObj Class'
 		{
-			ProgID = s 'MzCOM.MzObj.4.2.2.6'
+			ProgID = s 'MzCOM.MzObj.4.2.3.1'
 			VersionIndependentProgID = s 'MzCOM.MzObj'
 			ForceRemove 'Programmable'
 			LocalServer32 = s '%MODULE%'
diff --git a/src/worksp/mzscheme/mzscheme.rc b/src/worksp/mzscheme/mzscheme.rc
index 4982a24670..144ec6c50e 100644
--- a/src/worksp/mzscheme/mzscheme.rc
+++ b/src/worksp/mzscheme/mzscheme.rc
@@ -29,8 +29,8 @@ APPLICATION             ICON    DISCARDABLE     "mzscheme.ico"
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 4,2,2,6
- PRODUCTVERSION 4,2,2,6
+ FILEVERSION 4,2,3,1
+ PRODUCTVERSION 4,2,3,1
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -48,11 +48,11 @@ BEGIN
             VALUE "CompanyName", "PLT Scheme Inc.\0"
             VALUE "FileDescription", "PLT Scheme application\0"
             VALUE "InternalName", "MzScheme\0"
-            VALUE "FileVersion", "4, 2, 2, 6\0"
+            VALUE "FileVersion", "4, 2, 3, 1\0"
             VALUE "LegalCopyright", "Copyright �© 1995-2009\0"
             VALUE "OriginalFilename", "mzscheme.exe\0"
             VALUE "ProductName", "PLT Scheme\0"
-            VALUE "ProductVersion", "4, 2, 2, 6\0"
+            VALUE "ProductVersion", "4, 2, 3, 1\0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/src/worksp/starters/start.rc b/src/worksp/starters/start.rc
index 51d5b6681b..fc5930208b 100644
--- a/src/worksp/starters/start.rc
+++ b/src/worksp/starters/start.rc
@@ -22,8 +22,8 @@ APPLICATION             ICON    DISCARDABLE     "mzstart.ico"
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 4,2,2,6
- PRODUCTVERSION 4,2,2,6
+ FILEVERSION 4,2,3,1
+ PRODUCTVERSION 4,2,3,1
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -45,7 +45,7 @@ BEGIN
 #ifdef MZSTART
             VALUE "FileDescription", "PLT Scheme Launcher\0"
 #endif
-            VALUE "FileVersion", "4, 2, 2, 6\0"
+            VALUE "FileVersion", "4, 2, 3, 1\0"
 #ifdef MRSTART
             VALUE "InternalName", "mrstart\0"
 #endif
@@ -60,7 +60,7 @@ BEGIN
             VALUE "OriginalFilename", "MzStart.exe\0"
 #endif
             VALUE "ProductName", "PLT Scheme\0"
-            VALUE "ProductVersion", "4, 2, 2, 6\0"
+            VALUE "ProductVersion", "4, 2, 3, 1\0"
         END
     END
     BLOCK "VarFileInfo"