How do I correct MY "system.indexoutofrangeexception"?

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C#

file

forms

IO

exceptions

I have a main form that opens a child form. I have a routine in the MainForm.cs to create 2 subdirectories and 1 text file. In the declaration of MainForm(), I added code to run my function "createSSMonitorSubDirectories();"

void createSSMonitorSubDirectories()
{
    if (!System.IO.Directory.Exists(@"Saved"))
	{
	  System.IO.Directory.CreateDirectory(@"Saved");
	}
	if (!System.IO.Directory.Exists(@"config"))
	{
	  System.IO.Directory.CreateDirectory(@"config");
	  if(!System.IO.File.Exists(@"config\config.txt"))
	    {
	     var configFile = System.IO.File.Create(@"config\config.txt");
	     configFile.Close();
	     string defaultText = ("IP Address: 012.345.678.901\r\nDevice Port: 1111\r\nLog Directory: Saved\\\r\nConfig Directory: config\\\r\nEnter Modules here.\r\n");
	     System.IO.File.WriteAllText(@"config\config.txt", defaultText);
	    }
	}
}

I have a button when clicked shows the child dialog.

void ConfigbuttonClick(object sender, EventArgs e)
{
      var ccf = new configConnection();
      ccf.ShowDialog(this);
}

With the above code, I get program shutdown with the following message:

System.IndexOutOfRangeException: Index was outside the bounds of the array.
at SS_BusMonitor.configConnection.fillInConfigForm()

The fillInConfigForm() is ran as soon as the child form is activated. Here's the code:

void fillInConfigForm()
		{
			
			try{
				string[] lines = System.IO.File.ReadAllLines(@"config\config.txt");
				
				var trimCharsIP = "IP Address:";
				var trimmedIP = lines[0].TrimStart(trimCharsIP.ToCharArray());
				deviceIPAddress.Text = trimmedIP;
				var trimCharsPort = "Device Port:";
				var trimmedPort = lines[2].TrimStart(trimCharsPort.ToCharArray());
				devicePortNumber.Text = trimmedPort;
				var trimLogDirectory = "Log Directory:";
				var trimmedLD = lines[4].TrimStart(trimLogDirectory.ToCharArray());
				logDirectory.Text = trimmedLD;
				var trimConfigDirectory = "Config Directory:";
				var trimmedCD = lines[6].TrimStart(trimConfigDirectory.ToCharArray());
				configDirectory.Text = "C:" + trimmedCD;
				
				for(int i = 8; i < lines.Length; i++)
				{
					string nextLine =  (lines[i]);
					this.moduleNamesList.Text += nextLine + "\n";
				}
			}
			catch (ArgumentNullException e2) 
			  {
			    MessageBox.Show("Load Config Defaults: " + e2.Message, "SS Bus Monitor", 
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
			  }
		}

What I have tried:

When I comment out all code in the try statement, the child form shows and I can edit and save its fields. Additionally, when I comments out the MainForm's statement and have subdirectories and the config.txt file then all works as designed.

I have read all other similar errors but none seem to be my issue. I've spent nearly 6 hours reading, searching and looking for solutions. Please guide me to an answer.

I think I need to re-initialize with a new statement but I have run out of ideas. Any suggestions? It seems to be a conflict between the WriteAllText and the ReadAllLines. Am I thinking correctly? What is the "fix"?
TIA