What line of code geneartes the error?

>I get the following error when trying to import worksheets into a table from exce: ole error code 0x80030020.
>
>My code is as follows:
>
>Local loExcel, lnSheets, i, lcName, laSheetNames[1]
>
>Clear All
>
>Use S:\VFPAPPS\DEBTSERV\DATA\BOND_REDEMPTIONS.DBF Exclusive
>
>loExcel = CreateObject("excel.application")
>loExcel.Workbooks.Open("S:\VFPAPPS\DEBTSERV\DATA\PRF-first day of month.xls")
>lnSheets = loExcel.ActiveWorkbook.Sheets.Count
>
>Dimension laSheetNames[lnSheets,1]
>
>For i = 1 to lnSheets
> lcName = loExcel.ActiveWorkbook.Sheets[i].name
> laSheetNames[i] = lcName
>EndFor
>
>loExcel.Workbooks.Close()
>loExcel.Quit()
>Release loExcel
>
>For i = 1 to Alen(laSheetNames)
> lcName = laSheetNames[i]
> Append From "S:\VFPAPPS\DEBTSERV\DATA\PRF-first day of month.xls" type xl8 sheet lcName
>EndFor
>
>What am I missing?