Method 'Open' of object 'Workbooks' failed

Question

here is a very small piece of code. I tested and worked for office 03, 07, 10 versions without a problem. but on one machine running Win7 and Office 2007 fails always on this line:

Set oWB = oExcel.Workbooks.Open("C:\myFile.xls")

Method 'Open' of object 'Workbooks' failed

what is the possible solution? PS file is not damaged.

Dim oExcel As Excel.Application
Dim oWB As Workbook
Dim oWS As Worksheet
Dim rRng As Excel.Range

Application.ScreenUpdating = False
Set oExcel = New Excel.Application
Set oWB = oExcel.Workbooks.Open("C:\myFile.xls")
Set oWS = oExcel.Worksheets(2)
Set rRng = oWS.Range("C01:C500")
oExcel.Visible = False

Answer 1

thanks everyone.

I found the solution, Foxit reader add-in in word was causing the trouble. once removed everything worked.