Wix launches application when uninstalling - wix

Question

I have got a strange problem when using Wix to create a Windows Installer Setup for an application I'm working on.
Basically, when the application uninstalls it seems to be launching the application's executable before finalizing the uninstall. I am not sure why it is doing this as I am a newbie on Wix.
Here is the full Wix code, which I got from here.
<?xml version="1.0" encoding="UTF-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
<?define Product_Name="Orbit Invoice System"?>
<?define Product_Manufacturer="Orbit"?>
<?define Product_Name_Short="OIS"?>
<?define Product_Manufacturer_Short="Orbit"?>
<?define MainExeID="MainExeID"?>
<!--<?define Product_Version=!(bind.fileVersion.$(var.MainExeID))?>-->
<?define Product_Version=!(bind.assemblyVersion.$(var.MainExeID))?>
<?define SetupResourcesDir=$(var.SolutionDir)\icons\?>
<Product Id="*" Name="$(var.Product_Name)" Version="$(var.Product_Version)" Manufacturer="$(var.Product_Manufacturer)"
Language="1033"
UpgradeCode="F9A23E67-669B-40E5-9995-D8425D08F35F">
<Package InstallerVersion="200" Compressed="yes" InstallScope="perMachine" />
<!--Check for .Net Framework 3.5 SP 1-->
<PropertyRef Id='NETFRAMEWORK40FULL'/>
<Condition Message="This application requires .NET Framework 4.0. Please install the .NET Framework then run this installer again.">
<![CDATA[Installed OR NETFRAMEWORK40FULL]]>
</Condition>
<MajorUpgrade DowngradeErrorMessage="A newer version of $(var.Product_Name) is already installed."
Schedule="afterInstallValidate"
/>
<MediaTemplate EmbedCab="yes" />
<Feature Id="ProductFeature" Title="$(var.Product_Name) Setup" Level="1">
<ComponentGroupRef Id="ProductComponents" />
</Feature>
<!--Icon must be 16x16-->
<Icon Id="AddRemoveProgramsIcon" SourceFile="$(var.SetupResourcesDir)libra.ico"/>
<Property Id="ARPPRODUCTICON" Value="AddRemoveProgramsIcon" />
<!--<Property Id="ARPHELPLINK" Value="" />-->
<InstallExecuteSequence>
<Custom Action="CleanUpUserData" After="InstallInitialize">Installed AND NOT UPGRADINGPRODUCTCODE AND NOT REINSTALL</Custom>
<!--<Custom Action="LaunchApplication" Before="InstallFinalize" >UPGRADINGPRODUCTCODE OR REINSTALL OR NOT Installed</Custom>-->
</InstallExecuteSequence>
</Product>
<Fragment>
<CustomAction Id="CleanUpUserData" FileKey="$(var.MainExeID)" ExeCommand="cleanUpUserData" Execute="immediate" Impersonate="yes" Return="ignore"/>
<!--<CustomAction Id="LaunchApplication" FileKey="$(var.MainExeID)" ExeCommand="mustBeSomethingOrTheUpdateWillFailWithError2753" Execute="commit" Impersonate="yes" Return="asyncNoWait"/>-->
</Fragment>
<!--Directory general structure-->
<Fragment>
<Directory Id="TARGETDIR" Name="SourceDir">
<!--Program Files-->
<Directory Id="ProgramFilesFolder">
<Directory Id="INSTALLFOLDER" Name="$(var.Product_Name)" />
</Directory>
<!--Startup Programs Menu-->
<Directory Id="ProgramMenuFolder" Name="Programs">
<Directory Id="ProgramMenuDir" Name="$(var.Product_Manufacturer)">
<Component Id="ProgramMenuDir" Guid="*" >
<Shortcut Id="UninstallProduct"
Name="Uninstall $(var.Product_Name)"
Target="[SystemFolder]msiexec.exe"
Arguments="/x [ProductCode]"
Description="Uninstalls $(var.Product_Name)" />
<RemoveFolder Id='ProgramMenuDir' On='uninstall' />
<RegistryValue Root='HKCU' Key='Software\$(var.Product_Manufacturer_Short)\$(var.Product_Name_Short)' Type='string' Value='' KeyPath='yes' />
</Component>
</Directory>
</Directory>
<!--Desktop-->
<Directory Id="DesktopFolder" Name="Desktop" />
</Directory>
</Fragment>
<!--Directory file structure-->
<Fragment>
<DirectoryRef Id="INSTALLFOLDER">
<Component Id="MainExecutable" Guid="*">
<File Id="$(var.MainExeID)" Name="$(var.Product_Name).exe" Source="$(var.Invoice.TargetPath)" DiskId="1" KeyPath="yes" Vital="yes"
Assembly=".net" AssemblyApplication="$(var.MainExeID)">
<Shortcut Id="MainExeDesktop" Directory="DesktopFolder" Name="$(var.Product_Name)" WorkingDirectory="INSTALLFOLDER"
Icon="MainExeIcon.exe"
Description="Launches the $(var.Product_Name) application" Advertise="yes" >
<Icon Id="MainExeIcon.exe" SourceFile="$(var.Invoice.TargetPath)"/>
</Shortcut>
<Shortcut Id="MainExeProgramMenu" Directory="ProgramMenuDir" Name="$(var.Product_Name)" WorkingDirectory="INSTALLFOLDER"
Icon="MainExeIcon.exe"
Description="Launches the $(var.Product_Name) application" Advertise="yes" />
<Shortcut Id="CleanUpLocalFiles" Directory="ProgramMenuDir" Name="CleanUp the Local Files" Arguments="cleanUpUserData" WorkingDirectory="INSTALLFOLDER"
Icon="MainExeIcon.exe"
Description="Cleanup all the downloaded files of the $(var.Product_Name) for the current user" Advertise="yes"/>
</File>
</Component>
<Component Id="MainExecutableConfig" Guid="BDFC3501-CB6A-4C75-A4AE-05C0F7FE2DC2">
<File Id="MainExeConfig" Name="$(var.Product_Name).exe.config" Source="$(var.Invoice.TargetPath).config" DiskId="1" KeyPath="yes" Vital="yes" />
<File Id="InvoiceConfig" Name="InvoiceConfiguration.dll" Source="$(var.Invoice.TargetDir)\InvoiceConfiguration.dll" DiskId="1" Vital="yes" />
<File Id="DocumentFormatOpenXml" Name="DocumentFormat.OpenXml.dll" Source="$(var.Invoice.TargetDir)\DocumentFormat.OpenXml.dll" DiskId="1" Vital="yes" />
<File Id="SalesInvoiceTemplate" Name="SalesInvoiceTemplate.docx" Source="$(var.Invoice.TargetDir)\SalesInvoiceTemplate.docx" DiskId="1" Vital="yes" />
</Component>
</DirectoryRef>
</Fragment>
<!--Components groups-->
<Fragment>
<ComponentGroup Id="ProductComponents" Directory="INSTALLFOLDER">
<ComponentRef Id="MainExecutable" />
<!--<ComponentRef Id="Dlls" />
<ComponentRef Id="LetterTemplates"/>-->
<ComponentRef Id="MainExecutableConfig" />
<ComponentRef Id="ProgramMenuDir" />
</ComponentGroup>
</Fragment>
</Wix>
Any ideas?

Answer 1

CleanUpUserData custom action run the $(var.MainExeID) application.
<CustomAction Id="CleanUpUserData" FileKey="$(var.MainExeID)" ExeCommand="cleanUpUserData" Execute="immediate" Impersonate="yes" Return="ignore"/>
The below condition (Installed AND NOT UPGRADINGPRODUCTCODE AND NOT REINSTALL) means the Custom action will be run if setup installed and not in upgrade or reinstall. So it will run in Repair or Uninstall(both will meet this condition). So your application is running in Uninstall.
<Custom Action="CleanUpUserData" After="InstallInitialize">Installed AND NOT UPGRADINGPRODUCTCODE AND NOT REINSTALL</Custom>
Check more about install and uninstall Conditions here.

Answer 2

After reviewing the answer given by #Vinoth I have changed the 'CleanUpUserData' custom action to this:
<Custom Action="CleanUpUserData" After="InstallInitialize">INSTALLED OR UPGRADINGPRODUCTCODE OR REINSTALL</Custom>
And this has now resolved the problem.