Weirdest Error - Cannot widen from target type to primitive type.

Okay, I have a solution with many forms. I also have two namespaces where I have about 20 different objects. Everything is going great til I add this one form. Now, on my task list I have two errors that say "Cannot widen from target type to primitive type.". When I double click them to goto the error it takes me to line one of the form (whether there are any Imports or not). I can't figure this out. The only other different from that form is that the Sub New() looks like this Sub New(ByVal n as NoteBook). The NoteBook object is taken from my Namespace which is Imported at the top of the form. I also am calling the ShowDialog() event.

dim frm as New frmPassword(myNotebook)
frm.ShowDialog()

Even if I take out my modified Sub New() and all references to Objects in my Namespace I still get the same 2 errors "Cannot widen from target type to primitive type." both of which, as I said take me to line one of that form.

I tried compiling this code and it runs great on my computer, however when application is ran on another computer (which is exactly the same as mine, other than minus visual studio, same OS (XP Pro), same RAM, processor, etc) the form will "flash" on and then disappear. You can see that it loaded the dialog box but then it's mysteriously gone.

I have searched the MSDN, and every forum I'm aware of for the "Cannot widen from target type to primitive type." error and I can't find anything. I would appreciate any help or insight to this problem. Thanks alot!

Here is my form:

VB Code:

Imports SmartNote.SmartObjects
Imports SmartNote.BookIntegration
 
Public Class frmSecurity
    Inherits System.Windows.Forms.Form
    Public nb As New Notebook()
    Private justclickedit As Boolean = False
 
#Region " Windows Form Designer generated code "
 
    Public Sub New(ByVal nards As Notebook)
        MyBase.New()
 
        'This call is required by the Windows Form Designer.
        InitializeComponent()
 
        'Add any initialization after the InitializeComponent() call
        nb = nards
    End Sub
 
    'took out the form designer junk
    'Form overrides dispose to clean up the component list.
 
    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer
 
    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
   
 
#End Region
 
    Private Sub chkHelp_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles chkHelp.CheckedChanged
        If chkHelp.Checked = True Then
            Me.Height = 263
        Else
            Me.Height = 168
        End If
    End Sub
 
    Private Sub frmSecurity_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If nb.Security.IsProtected = True Then
            chk_Password.Checked = True
            txtPassword.Enabled = True
            txtConfirm.Enabled = True
            Dim crypter As New Crypto(Crypto.Providers.DES)
            Dim pass As String = crypter.Decrypt(nb.Security.Password, smartKEY)
            txtPassword.Text = pass
            txtConfirm.Text = pass
        Else
            chk_Password.Checked = False
            txtPassword.Enabled = False
            txtConfirm.Enabled = False
        End If
 
        If nb.Security.IsSerialized = True Then
            chkSerial.Checked = True
        Else
            chkSerial.Checked = False
        End If
        Me.DialogResult = DialogResult.Cancel
    End Sub
 
    Private Sub txtPassword_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtPassword.Leave
        If txtPassword.Text = "" And justclickedit = False Then
            chk_Password.Checked = False
            txtPassword.Enabled = False
            txtConfirm.Enabled = False
        End If
        justclickedit = False
    End Sub
 
    Private Sub txtConfirm_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtConfirm.Leave
        If txtPassword.Text <> txtConfirm.Text Then
            MsgBox("Your passwords do not match.", MsgBoxStyle.Critical, "Security Error")
            txtPassword.Text = ""
            txtConfirm.Text = ""
            txtPassword.Select()
        Else
            nb.Security.IsProtected = True
            nb.Security.Password = txtPassword.Text
        End If
    End Sub
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If chkSerial.Checked = True Then
            nb.Security.IsSerialized = True
            Dim r As New rRegistry()
            Dim sN As String = r.QueryValue(rRegistry.ERegistryPossibleRoots.HKEY_CURRENT_USER, "Software\Legal Info-Graphics\SmartNote", "serial", "NULL")
            If sN = "NULL" Then
                MsgBox("Error finding Serial Number...")
                nb.Security.IsSerialized = False
                chkSerial.Checked = False
            Else
                Dim crypter As New Crypto(Crypto.Providers.DES)
                Dim theserial As String = crypter.Encrypt(sN, smartKEY)
                nb.Security.SerialNumber = theserial
            End If
        End If
 
        If chk_Password.Checked = True Then
            If txtPassword.Text <> txtConfirm.Text Then
                MsgBox("Your passwords do not match.", MsgBoxStyle.Critical, "Security Error")
                txtPassword.Text = ""
                txtConfirm.Text = ""
                txtPassword.Select()
            Else
                nb.Security.IsProtected = True
                Dim crypter As New Crypto(Crypto.Providers.DES)
                Dim thepass As String = crypter.Encrypt(txtPassword.Text, smartKEY)
                nb.Security.Password = thepass
            End If
        End If
        Me.DialogResult = DialogResult.OK
        tempNoteBookforSecurity = nb
    End Sub
 
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Me.DialogResult = DialogResult.Cancel
        Me.Close()
    End Sub
 
    Private Sub chk_Password_CheckStateChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles chk_Password.CheckStateChanged
        If chk_Password.Checked = True Then
            txtPassword.Enabled = True
            txtConfirm.Enabled = True
            txtPassword.Select()
        Else
            txtPassword.Enabled = False
            txtConfirm.Enabled = False
        End If
        justclickedit = True
    End Sub
 
    Private Sub txtPassword_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtPassword.Enter
        justclickedit = False
    End Sub
End Class

There are some help in the web about this, and the suggestions:

Aren't you using an Integer value, for instance, where a Short or Byte is expected??
Isn't any file in your project Read Only?