问ImageMagick/IM4J FileNotFoundException

EN

C:/
    myApp/
        images/             --> where all of my JPEGs are
        thumbnails/         --> where I want ImageMagick to send the converted thumbnails to
        imageMagickHome/    --> Where I downloaded the DLL to
            ImageMagick-6.7.6-1-Q16-windows-dll.exe
    ...

// In my driver...
File currentFile = new File("C:/myApp/images/test.jpg"); --> exists and is sitting at this location
File thumbFile = new File("C:/myApp/thumbnails/test-thumb.jpg"); --> doesnt exist yet! (destination file)
Thumbnailer myThumbnailer = new Thumbnailer();
myThumbnailer.generateThumbnail(currentFile, thumbFile);

// Then the Thumbnailer:
public class Thumbnailer
{
    // ... omitted for brevity
    
    public void generateThumbnail(File originalFile, File thumbnailFile)
    {
        // Reads appConfig.xml from classpath, validates it against a schema,
        // and reads the contents of an element called <imPath> into this
        // method's return value. See below
        String imPath = getIMPathFromAppConfigFile();
    
        org.im4java.core.IMOperation op = new Operation();
        op.colorspace(this.colorSpace);
        op.addImage(originalFile.getAbsolutePath());
        op.flatten();
        op.addImage(thumbnailFile.getAbsolutePath());
        
        ConvertCmd cmd = new ConvertCmd();
        
        cmd.setSearchPath(imPath);
        
        // This next line is what throws the FileNotFoundException
        cmd.run(op);
    }
}

<imPath>C:/myApp/imageMagickHome</imPath>