diffmerge.xml

<?xml version="1.0" encoding="UTF-8"?>
<packages:packages xmlns:packages="http://www.wpkg.org/packages">

	<package id="diffmerge" name="DiffMerge English" revision="%version%.1" reboot="false" priority="72">
	<variable name="version" value="4.2.0.697" />

	<check type="uninstall" condition="exists" path="SourceGear DiffMerge %version%.stable (x64)" />

	<install cmd='msiexec /l* %WPKGLOGDIR%\diffmerge-%version%.log /qn /i "%WPKGSOFTWARE%\diffmerge\DiffMerge_%version%.stable_x64.msi"' />
	<install cmd='cmd /c del /q "%Public%\Desktop\DiffMerge.lnk"' >
		<exit code="any" />
	</install>

	<upgrade include="remove" />
  <upgrade include="install" />

	<remove cmd='msiexec /qn /x {F6BEC317-F689-4158-B1F0-F229B794CFBA}' >
    <!-- 1605 - already removed -->
    <exit code="1605" />
  </remove>

	</package>

 </packages:packages>