When installing my software on Windows Vista Ultimate 32 Bit, and selecting "C:\Program Files" (a directory that required admin right), the installer start as non-admin, and then request the admin right just before the download (pic Security_Warning). It then crash just after the download when starting the installation (pic Installer_Crash_After_Download).
If I run the installer as administrator before, then the installation succeed.
Here is my installer config:
<?xml version="1.0" encoding="UTF-8"?>
<Installer>
    <Name>MyApp</Name>
    <Version>3.0.0</Version>
    <Title>MyApp Preprod Installer</Title>
    <Publisher>My Company</Publisher>
	<ProductUrl>https://www.myapp.com</ProductUrl>
	<InstallerWindowIcon>installer</InstallerWindowIcon>
    <InstallerApplicationIcon>installer</InstallerApplicationIcon>
	<Logo>LogoMyApp.png</Logo>
    <StartMenuDir>MyApp Preprod</StartMenuDir>
	<UninstallerName>MaintenanceTool</UninstallerName>
	<AllowNonAsciiCharacters>true</AllowNonAsciiCharacters>
	<AllowSpaceInPath>true</AllowSpaceInPath>
    <TargetDir>@homeDir@/MyApp</TargetDir>
	<RemoteRepositories>
     <Repository>
             <Url>http://www.mydomain.me/repository_preprod</Url>
             <Enabled>1</Enabled>
             <DisplayName>MyApp preprod repository</DisplayName>
     </Repository>
</RemoteRepositories>
</Installer>
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