Calling this:
Noesis.BitmapImage bitmapImage = new Noesis.BitmapImage(new Uri("/home/user/image.bmp"));

Results in a FileNotFoundException because the path provided to the FileTextureProvider is missing the leading "/"
public class FileSystemTextureProvider : FileTextureProvider
{
public FileSystemTextureProvider()
{
}

    public override Stream OpenStream(string path)
    {
        return new FileStream("home/user/image.bmp", FileMode.Open, FileAccess.Read); // Crash due to missing "/"
    }
}