title: WIX installer root directory and versioning
body: <p>I have created a silent installer Using WIX for my application. I want it to install my application to <strong>C:\MyApps</strong> folder but its <strong><em>Directory Id='TARGETDIR' Name='SourceDir'</em></strong> tag randomly picks C or D drive. I want to enforce my installation to C drive only. Also in case, I provide version number greater than 4.0.5, I am geting an error during installation saying "This installation package cannot be installed by the Windows Installer Service. You must install a newer version of the Window Installer service." I am having Windows XP professional SP3 Version 2002.</p>