Issue 1598 - The set up was unable to automatically close IE while uninstall

installer/src/msi/adblockplusie.wxs

 <?xml version="1.0" encoding="UTF-8"?>
 <!--
   Compilation Note:
   You may see linking errors that look like these:
     <quote>LGHT0217 : Error executing ICE action 'ICExx' [...] The error code is 2738.</quote>
   The documentation for this error code talks about custom actions,
     even though the CustomAction keyword does not appear in this source.
   Certain WiX elements are implemented by MSI custom actions,
     which means this source implicitly declares some insofar as the Windows Installer sees it.
   These errors are benign and can be avoided by some fiddling with the registry on the development machine.
@@ skipping 165 matching lines @@
         Id="Close_IE"
         BinaryKey="installer_ca"
         DllEntry="AbpCloseIe"
         Return="check"
     />
     <!--
       We require a 32-bit DLL for the 32-bit installer, and likewise for 64-bit.
       The 64-bit Close_IE action needs to examine 64-bit processes on the system, which are invisible to 32-bit processes.
     -->
     <Binary Id="installer_ca" SourceFile="$(var.installer_dir)\build\$(var.build_dir)\$(var.CA_Configuration)\installer-ca.dll"/>    
-    <InstallUISequence>
+    <InstallExecuteSequence>

[Eric, 2015/03/18 16:13:47]

This doesn't do what you want. The whole point of running the CA we have in the
UI sequence is that it has UI elements in it. The UI sequence is only run when
the UI is active. The execute sequence is run in all cases, even when run in
silent mode. We'll be breaking a very basic integrity requirement of Windows
Installer in that circumstance.

       <!--
         The LaunchConditions action occurs near the beginning, before any of the expensive operations.
       -->
       <Custom
         Action="Close_IE"
         After="LaunchConditions"
       />
-    </InstallUISequence>
+      
+    </InstallExecuteSequence>
 
     <!--
       We have only a single feature, since there aren't any optional parts.
       The display is hidden for the same reason; there's nothing to choose from.
     -->
     <Feature Id="ProductFeature"
       Title="!(loc.Title)" Description="!(loc.UI_Description)"
       Display="hidden">
       <ComponentGroupRef Id="Installation_Folders"/>
       <ComponentGroupRef Id="Binaries"/>
@@ skipping 623 matching lines @@
         <Component Id="ini_settings.ini" Guid="dc30c3b0-d713-11e2-8b8b-0800200c9a66">
           <File Name="settings.ini"/>
         </Component>
       </Directory>
     </DirectoryRef>
 
     <?include ../installer-lib/custom-i18n.wxi ?>
     <?include ../custom-action/close_ie.wxi ?>
   </Product>
 </Wix>