When launching MPF as a process in .NET and redirecting the output, e.g. via [`System.Diagnostics.Process.ErrorDataReceived` ](https://learn.microsoft.com/en-us/dotnet/api/system.diagnostics.process.errordatareceived?view=net-9.0#system-diagnostics-process-errordatareceived) and [`System.Diagnostics.Process.OutputDataReceived`](https://learn.microsoft.com/en-us/dotnet/api/system.diagnostics.process.outputdatareceived?view=net-8.0), all output from MPF is treated as an error.