Switch platform of build cause error

[CrazyBaran]

When I try handle bug from #12 I find another bug. When I switch from x64 to x86 I get:
System.BadImageFormatException: Nie można załadować pliku lub zestawu „assemblyName_636456428965025197, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null”. Ten zestaw został skompilowany dla innego procesora.
w System.Reflection.RuntimeAssembly.nLoadImage(Byte[] rawAssembly, Byte[] rawSymbolStore, Evidence evidence, StackCrawlMark& stackMark, Boolean fIntrospection, SecurityContextSource securityContextSource)
w System.Reflection.Assembly.Load(Byte[] rawAssembly)
w Tune.Core.DiagnosticAssembly..ctor(DiagnosticEngine engine, String assemblyName, CSharpCompilation compilation) w C:\TestAndOtherStuff\TUNE\Tune.Core\DiagnosticAssembly.cs:wiersz 47
w Tune.Core.DiagnosticEngine.Compile(String script, DiagnosticAssemblyMode mode, DiagnosticAssembyPlatform platform) w C:\TestAndOtherStuff\TUNE\Tune.Core\DiagnosticEngine.cs:wiersz 46
w Tune.UI.MVVM.ViewModels.MainViewModel.d__96.MoveNext() w C:j\TestAndOtherStuff\TUNE\Tune.UI.ViewModels\ViewModels\MainViewModel.cs:wiersz 281

Somewhere AssemblyPlatform is not get properly?