Error with application.ontime...macro runs twice next day..

HELLO!!,

THANKS FOR LOOKING BY,,

I'm kindaf tired lookig for a solution for this...its been three weeks....

i did a macro for reuters terminal so that different excel sheets automatically open at pre defined time ..pick up the market rates and then save in a shared folder...this process should repeat everyday....i have around 14 excel sheets at different timings to open.

My problem is after the day i run the macro...that is next day morning..when the first file opens..it tries to open twice...and pops up the error message "Do you want to open already open file" and my macro gets stuck der....this error message is my problem..it happens the next day...the macro works perefectly the day i run the macro..but when the date moves to next date..this issue happens...the file tries to open twice...

what can be the reason for this issue??

is it because of cache memory...that file is not properly closed??? or shouldn't i put a loop in the end...does it runs twice because of the loop????

Sub Timer()
Application.OnTime TimeValue("12:08:00"), "a"
Application.OnTime TimeValue("12:10:00"), "b"
End Sub

Sub a()
Workbooks.Open Filename:="Z:\abcd"
End Sub

Sub b()
Workbooks.Open Filename:="Z:\efgh"
Call Timer
End Sub

Sub ScheduleAProcedure()
Application.OnTime Now + TimeSerial(0, 0, 10), "SaveBook"
End Sub
Sub SaveBook()
Dim sFile As String
With ActiveSheet.UsedRange
.Value = .Value
End With
sFile = "fixingrates" & " " & Format(Now(), "dd.mm.yy.hh.mm") & ".xls"
ActiveWorkbook.SaveAs Filename:="Z:\checker\" & sFile
ThisWorkbook.Close Saved = True
End Sub

this is the macro in each workbook that runs when workbook opens.


any suggestions

many thanks

Gokz

Any help???