WPF Prism: FileNotFoundException in Boostrapper.CreateShell after adding NativeHelpers for DPI awareness

I am working on a WPF project with Prism library. After adding NativeHelpers to make my app DPI aware (according to https://docs.microsoft.com/en-us/windows/desktop/hidpi/declaring-managed-apps-dpi-aware), I get BadImageFormatException when trying to run app in AnyCPU. If I check "Prefer 32 bit" box, it runs fine on my machine and any other computer with VS installed, but on non-dev machines crashes on startup with System.IO.FileNotFoundException in Bootstrapper.CreateShell

Here's exception itself from EventViewer of Windows

Ausnahmeinformationen: System.IO.FileNotFoundException
   bei WinDiagBaseline.Bootstrapper.CreateShell()
   bei Prism.Unity.UnityBootstrapper.Run(Boolean)
   bei Prism.Bootstrapper.Run()
   bei WinDiagBaseline.App.OnStartup(System.Windows.StartupEventArgs)
   bei System.Windows.Application.<.ctor>b__1_0(System.Object)
   bei System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
   bei System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
   bei System.Windows.Threading.DispatcherOperation.InvokeImpl()
   bei System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(System.Object)
   bei MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(System.Object)
   bei System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   bei System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   bei System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
   bei MS.Internal.CulturePreservingExecutionContext.Run(MS.Internal.CulturePreservingExecutionContext, System.Threading.ContextCallback, System.Object)
   bei System.Windows.Threading.DispatcherOperation.Invoke()
   bei System.Windows.Threading.Dispatcher.ProcessQueue()
   bei System.Windows.Threading.Dispatcher.WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   bei MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   bei MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object)
   bei System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
   bei System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
   bei System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)
   bei MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)
   bei MS.Win32.UnsafeNativeMethods.DispatchMessage(System.Windows.Interop.MSG ByRef)
   bei System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame)
   bei System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame)
   bei System.Windows.Application.RunDispatcher(System.Object)
   bei System.Windows.Application.RunInternal(System.Windows.Window)
   bei System.Windows.Application.Run(System.Windows.Window)
   bei System.Windows.Application.Run()
   bei WinDiagBaseline.App.Main()

How can I fix this? Thanks