Shell Extension DLL Deployment Issue

[AndreySidorove]

Scenario: ShellExt.dll may not be correctly copied to output directory
File: RunOnce.csproj
Code:

<Content Include="$(_ShellExtDll)" Condition="Exists('$(_ShellExtDll)')">
    <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    <Link>ShellExt.dll</Link>
</Content>

Issue: DLL copy depends on condition check, incorrect build order may cause shell extension to fail