diff --git a/Other/Update/PortableAppsCommon.psm1 b/Other/Update/PortableAppsCommon.psm1
index 72f9ce4..d6f1f10 100644
--- a/Other/Update/PortableAppsCommon.psm1
+++ b/Other/Update/PortableAppsCommon.psm1
@@ -2,7 +2,7 @@
 # Description: Common classes and functions for portable apps powershell
 #   scripts
 # Author: Urs Roesch <github@bun.ch>
-# Version: 0.9.4
+# Version: 0.9.5
 # -----------------------------------------------------------------------------
 
 # -----------------------------------------------------------------------------
@@ -160,6 +160,11 @@ Function Download-Checksum() {
           # Multiline file with file name suffix
           Return $Line -replace "^($Pattern)\s+\*?$File", "`$1"
         }
+        "^$Pattern\s+.+/$File$" {
+          # Multiline file with multiple entries e.g. putty
+          # 2f49ec1e6c35e10c....  w32/putty.zip
+          Return $Line -replace "^($Pattern)\s+.*", "`$1"
+        }
         default {
           Debug debug "No match in line '$Line'"
         }
diff --git a/Other/Update/Update.ps1 b/Other/Update/Update.ps1
index fcd6582..ff4b450 100644
--- a/Other/Update/Update.ps1
+++ b/Other/Update/Update.ps1
@@ -37,7 +37,7 @@ Param(
 # -----------------------------------------------------------------------------
 # Globals
 # -----------------------------------------------------------------------------
-$Version = "0.0.35-alpha"
+$Version = "0.0.36-alpha"
 $Debug   = $True
 
 # -----------------------------------------------------------------------------
@@ -214,10 +214,13 @@ Function Update-Application() {
 }
 
 # -----------------------------------------------------------------------------
-Function Postinstall() {
-  $Postinstall = "$PSScriptRoot\Postinstall.ps1"
-  If (Test-Path $Postinstall) {
-    . $Postinstall
+Function Source-InstallScript() {
+  Param(
+    [String] $Mode
+  )
+  $Script = "$PSScriptRoot\$Mode.ps1"
+  If (Test-Path $Script) {
+    . $Script
   }
 }
 
@@ -325,8 +328,9 @@ Function Invoke-Helper() {
 # Main
 # -----------------------------------------------------------------------------
 $Config = Read-IniFile -IniFile $UpdateIni
+Source-InstallScript Preinstall
 Update-Application
 Update-Appinfo
-Postinstall
+Source-InstallScript Postinstall
 Create-Launcher
 Create-Installer