Runtime Error 1004: Method 'Range' of object '_Global' failed - vba

Question

I've seen numerous questions on the issue but none of the solutions fit my situation (I think) so any help is appreciated. I receive the error when setting the value of the LR integer variable. As with many others having this issue, it only fails the second time the subroutine is run.
Sub SaveEmailAttachments()
' Creates each variable to be used
Dim xlApp As Excel.Application, xlWB As Excel.Workbook, xlAtt As Excel.Workbook
Dim olItem As Outlook.MailItem
Dim LR As Integer, NR As Integer, j As Integer, intDir As Integer, random As Integer
' Path to the HWB Master template to be used
Const strPath As String = "C:\Users\dkirksey\Documents\SOF\SOF Station HWB Master w Macro.xlsm"
' If no emails are selected, present an error and exit
If Application.ActiveExplorer.Selection.Count = 0 Then
MsgBox "No Items selected!", vbCritical, "Error"
Exit Sub
End If
' Creates a new Excel application
On Error Resume Next
Set xlApp = New Excel.Application
xlApp.Visible = False
'Opens the Excel workbook
On Error GoTo 0
Set xlWB = xlApp.Workbooks.Open(strPath)
'Creates a new directory to store today's information
intDir = (fIsFileDIR("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy"), vbDirectory))
If intDir = 0 Then
MkDir ("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy"))
MkDir ("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy") & "\HWBs")
'Process each selected email
For Each olItem In Application.ActiveExplorer.Selection
j = j + 1
For cnt = 1 To olItem.Attachments.Count
If Right(olItem.Attachments(1).FileName, 4) = "xlsx" Or Right(olItem.Attachments(1).FileName, 3) = "xls" Or Right(olItem.Attachments(1).FileName, 4) = "xlsm" Then
olItem.Attachments(cnt).SaveAsFile ("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy") & "\HWBs\" _
& Format(Now, "mmddyy") & " " & j & olItem.Attachments(cnt).DisplayName)
Set xlAtt = xlApp.Workbooks.Open("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy") & "\HWBs\" _
& Format(Now, "mmddyy") & " " & j & olItem.Attachments(cnt).DisplayName)
xlAtt.Activate
If xlAtt.ActiveSheet.Range("A3").Value = "HWB" And xlAtt.ActiveSheet.Range("B3").Value = "Instruction (optional)" And xlAtt.ActiveSheet.Range("C3").Value = "Route (optional)" Then
LR = xlAtt.ActiveSheet.Range("A" & Rows.Count).End(xlUp).Row
xlAtt.ActiveSheet.Range("A4:C4" & LR).Select
Selection.Copy
xlWB.Activate
xlWB.ActiveSheet.Range("A" & Rows.Count).End(xlUp).Offset(1).Select
Selection.PasteSpecial xlPasteValues
xlWB.ActiveSheet.Cells(1, 1).Activate
End If
xlApp.DisplayAlerts = False
xlAtt.Close SaveChanges:=False
Else
olItem.Categories = "Purple Category"
End If
Next
Next olItem
j = 4
LR = xlWB.ActiveSheet.UsedRange.Rows.Count
Do Until j > LR
If IsNumeric(Cells(j, 1)) = False Then
Cells(j, 1).EntireRow.Delete
LR = LR - 1
ElseIf Cells(j, 1).Value = "" Then
Cells(j, 1).EntireRow.Delete
LR = LR - 1
Else
j = j + 1
End If
Loop
xlWB.SaveAs ("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy") & "\" & Format(Now, "mmddyy") & " Complete HWB List")
Else
ans = MsgBox("You have already run SOF today, would you like to continue anyway?", vbYesNo)
If ans = vbYes Then
random = Int((9999 - 100 + 1) * Rnd + 100)
MkDir ("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy") & random)
MkDir ("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy") & random & "\HWBs")
MsgBox "Your new folder is titled " & Format(Now, "mmddyy") & random & ", it is located in the Documents\SOF\HWB Files directory"
'Process each selected email
For Each olItem In Application.ActiveExplorer.Selection
j = j + 1
For cnt = 1 To olItem.Attachments.Count
If Right(olItem.Attachments(1).FileName, 4) = "xlsx" Or Right(olItem.Attachments(1).FileName, 3) = "xls" Or Right(olItem.Attachments(1).FileName, 4) = "xlsm" Then
olItem.Attachments(cnt).SaveAsFile ("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy") & random & "\HWBs\" _
& Format(Now, "mmddyy") & " " & j & olItem.Attachments(cnt).DisplayName)
Set xlAtt = xlApp.Workbooks.Open("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy") & random & "\HWBs\" _
& Format(Now, "mmddyy") & " " & j & olItem.Attachments(cnt).DisplayName)
xlAtt.Activate
If xlAtt.ActiveSheet.Range("A3").Value = "HWB" And xlAtt.ActiveSheet.Range("B3").Value = "Instruction (optional)" And xlAtt.ActiveSheet.Range("C3").Value = "Route (optional)" Then
LR = xlAtt.ActiveSheet.Range("A" & Rows.Count).End(xlUp).Row
xlAtt.ActiveSheet.Range("A4:C4" & LR).Select
Selection.Copy
xlWB.Activate
xlWB.ActiveSheet.Range("A" & Rows.Count).End(xlUp).Offset(1).Select
Selection.PasteSpecial xlPasteValues
xlWB.ActiveSheet.Cells(1, 1).Activate
End If
xlApp.DisplayAlerts = False
xlAtt.Close SaveChanges:=False
Else
olItem.Categories = "Purple Category"
End If
Next
Next olItem
j = 4
LR = xlWB.ActiveSheet.UsedRange.Rows.Count
Do Until j > LR
If IsNumeric(Cells(j, 1)) = False Then
Cells(j, 1).EntireRow.Delete
LR = LR - 1
ElseIf Cells(j, 1).Value = "" Then
Cells(j, 1).EntireRow.Delete
LR = LR - 1
Else
j = j + 1
End If
Loop
xlWB.SaveAs ("C:\Users\dkirksey\Documents\SOF\HWB Files\" & Format(Now, "mmddyy") & random & "\" & Format(Now, "mmddyy") & " Complete HWB List")
Else
xlWB.Close
xlApp.DisplayAlerts = True
xlApp.Quit
Exit Sub
End If
End If
xlWB.Close
xlApp.DisplayAlerts = True
xlApp.Quit
MsgBox "Well played !"
End Sub
I'm a rookie with VBA so excuse any redundant or just plain idiotic coding methods you notice.
The subroutine works perfectly the first time it is run, just not the second. Please help.
Thank you.