VBA Runtime Error 1004 “Application-defined or Object-defined error”

I have code VBA code written in MS Access 2010 (.mbd file) to write data into an Excel file (.xls file). Below is the code to write data into that excel file. When you run this code, it always throws Error#1004 "Application-defined or Object-defined error". When you debug the code (F8) or run it (F5), it runs absolutely fine with out any issues. I am still not able to figure it out on what exactly the issue is. This code works fine when executed in MS Access 2007.

Below is thr code that's getting executed and when it fails, the focus is set on the 3rd last line of the code marked in double astriek mark.

Sub PopulateReport(appExcel As Object, testcam)

Dim Site As String, intRec As Integer, i As Integer, cnt As Integer, intRecSet As Integer, cntr As Integer
Dim F1 As String, F2 As String, F3 As String, F4 As String, F5 As String, F6 As String, F7 As String
Dim F8 As String, F9 As String, F10 As String, F11 As String, F12 As String, F13 As String, CAMDate As Date
i = 0
cnt = 0
cntr = 0
Set cnn = CurrentProject.Connection

rec.Open "SELECT * FROM Site", cnn, adOpenStatic, adLockPessimistic
intRec = rec.RecordCount
Do Until cnt = intRec
rec.Move cnt
Site = rec(4)
Select Case Site
Case "Fort Worth"
cntr = 0
recset.Open "SELECT * FROM Employee", cnn, adOpenStatic, adLockPessimistic
intRecSet = recset.RecordCount
appExcel.Application.Goto Reference:="START_FW_CL"
Do Until cntr = intRecSet - 1
cntr = cntr + 1
appExcel.Application.CutCopyMode = False
appExcel.Application.Goto Reference:="START_FW2_CL"
go = appExcel.Application.Range("START_FW2_CL")
cntr = 1
With appExcel.Worksheets("Accts. > Clearing").[START_FW2_CL]
Do Until recset.EOF
**.Offset(cntr, 0) = recset(0)**
.Offset(cntr, 1) = recset(1)
.Offset(cntr, 2) = recset(2)
End Sub