Word instance is opening immediately in VB.net program

I put a break on the very first line, before it's even done anything (that I have written) "Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load" ... and the Word instance has started !!!

It's a Windows Forms project originally written under VS2010 but now I am using VS2015 ... I am using Office 2007 and this is a recently (this week) rebuilt Windows 7 x64 Home Professional machine.

These are my Imports and variable definitions ...

Imports System.IO
Imports System.Text.RegularExpressions
Imports System.Xml
'Imports Microsoft.Office.Core
Imports Microsoft.Office.Interop
'Imports Microsoft.Office.Tools.Word
Imports System.Windows.Forms.VisualStyles.VisualStyleElement
Imports System.Windows.Forms.Form
Imports System.Runtime.InteropServices
Imports System.IO.Compression
Imports System.Reflection
Imports Ionic.Zip 'Used to UnZip files, see http://dotnetzip.codeplex.com/
Imports Microsoft.VisualBasic.FileSystem
Imports System.IO.StreamWriter
Imports System.IO.TextWriter
Imports Outlook = Microsoft.Office.Interop.Outlook

Public Class Form1

Dim myProgramAborted As Boolean = False
Dim myFolder As String
Dim myTempFolder As String
Dim myDataFolder As String
Dim myNlFolder As String
Dim myTemplate As String
Dim myNewsLetter As String
Dim myTables As String
Dim myLeftCB As String
Dim myRARfile As String
Dim myLeague As String
Dim mySession As String
Dim myLastSession As String
Dim mySessionMinusOne As String
Dim mySessionString1 As String
Dim mySessionString2 As String
Dim myArray(,) As String
Dim myItem As String
Dim myCount As Int16 = 0
Dim myMSWord As New Word.Application
Dim myMSDoc As New Word.Document
Dim myArrayLen As Int16
Dim myWordData As String
Dim myWordHeading As String
Dim myWordLine As String
Dim myBlankLine As Boolean
Dim myCupRound As String
Dim myCupMatches As Int16 = 0
Dim myCupDraw As Int16 = 0
Dim myLeagueCupRound As String
Dim myLeagueCupMatches As Int16 = 0
Dim myLeagueCupDraw As Int16 = 0
Dim myTrophyRound As String
Dim myTrophyMatches As Int16 = 0
Dim myTrophyDraw As Int16 = 0
Dim myChampsTrophyRound As String
Dim myChampsTrophyMatches As Int16 = 0
Dim myChampsTrophyDraw As Int16 = 0
Dim myIntlRound As String
Dim myIntlMatches As Int16 = 0
Dim myCupCount As Int16 = 0
Dim myZipFolder As String
Dim myWriterTxt As String
Dim myAsciiTxt As String
Dim myNewResults As String
Dim myAucResTxt As String
Dim myNewsTabTxt As String
Dim myNewTable As String
Dim myNewTableTemp As String
Dim myStatfileTxt As String
Dim myTestRtf As String
Dim myTranstxt As String
Dim myScorers As String
Dim myInTxt As String
Dim myLineWanted As Boolean
Dim myOutLine As String = ""
Dim myOutFile As StreamWriter
Dim myNickNameFile As String
Dim myNotePadNum As Int16 = 0
Dim myNotePadFiles(15) As String
Dim myId As Int16
Dim myIdFile As String
Dim myErrorMsg As String
Dim myMessageBoxStyle As String
Dim myDiv As Int16 = 0
Dim myLine As Int16 = 0
Dim myFixturesTxt As String
Dim myAllTeamsTxt As String
Dim myEuroSpielTxt As String
Dim myOLrecipient As String
Dim myOLsubject As String
Dim myOLbody As String
Dim myLastNewsletter As String
Dim myAllTeamSess As String

Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

'Define file paths

myTempFolder = "K:\Newsletters\Newsletter Templates (Email)\Ribbon\"
myDataFolder = "K:\Newsletters\Application Files\"
myNlFolder = "K:\Newsletters\"

End Sub