ConvertTo - Object reference not set to an instance of an object (C#.NET)

@Josh1 wrote:

I am using the example code in the directory 'PDFCreator\COM Scripts\C#.Net\COM_TestForm\COM_TestForm.sln', and for some reason I am getting an error on the line 'printJob.ConvertTo(convertedFilePath);' saying "Object reference not set to an instance of an object". This error occurs when you click each of the 5 buttons, the code for the 'TestPage2PDF' is shown below.

I have seen a couple of other threads having the same issue, and I have tried the suggestion from another thread of changing the file path to My Documents with no sucess, is there a known fix for this yet?

using pdfforge.PDFCreator.UI.COM;

namespace COM_TestForm
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

    private void testPage_btn_Click(object sender, EventArgs e)
    {
        var jobQueue = new Queue();

        var assemblyDir = Assembly.GetExecutingAssembly().Location;
        var resultsDir = assemblyDir.Replace("\\bin\\Debug\\COM_TestForm.exe", "\\Results");
        var convertedFilePath = Path.Combine(resultsDir, "TestPage_2PDF.pdf");

        try
        {
            MessageBox.Show("Initializing the job queue");
            jobQueue.Initialize();

            MessageBox.Show("Printing windows test page...");
            PrintWindowsTestPage();

            if (!jobQueue.WaitForJob(10))
            {
                MessageBox.Show("The job didn't arrive within 10 seconds");
            }
            else
            {
                MessageBox.Show("Currently there are " + jobQueue.Count + " job(s) in the queue");
                MessageBox.Show("Getting job instance");
                PrintJob printJob = jobQueue.NextJob;

                printJob.SetProfileByGuid("DefaultGuid");

                MessageBox.Show("Converting under DefaultGuid");
                printJob.ConvertTo(convertedFilePath);


                if (!printJob.IsFinished || !printJob.IsSuccessful)
                {
                    MessageBox.Show("Could not convert: ");
                }
                else
                {
                    MessageBox.Show("The conversion was succesful!");
                }
            }
        }
        catch (Exception err)
        {
            MessageBox.Show("An error occured: " + err.Message);
        }
        finally
        {
            MessageBox.Show("Releasing the queue object");
            jobQueue.ReleaseCom();
        }
    }

}
}

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