Subscript out of Range? What does that mean?

[takamine334]

When I run this code:

Dim S As String
S = wb.Document.body.innerHTML
 
 
 If TempPass Then
                            v = Split(S) ', vbNewLine)
                                For Each w In v
                                    w = Split(w, "=")
                        'Debug.Print w(0), w(1)
                        If w(0) = "username" Then Form1.username.Text = w(1)
                Next
 
                            Form18.Hide
                            Form1.Show
               
        End If

on a webpage that looks like this

level=4
[email protected]
first_name=Dave
last_name=Machews

When in debugging mode, the W = "" for some reason and I get a subscript out of range...what does that mean?