>>Could you check in Task Manager whether instances of other hidden Excel.exe are running? It might be that you did not close them properly on the previous run.
>>
>>Also, I would modify your code to avoid additional Excel childs objects:
>>

>>oExcel = CreateObject("Excel.Application")
>>with oExcel
>>     .DisplayAlerts = .F.
>>     .Workbooks.Add()
>>     with .ActiveSheet
>>         .Cells(1, 1).Value = "AAA"
>>         ..........
>>     endwith
>>     .ActiveWorkbook.SaveAs("C:\Test.xls")
>>      .Quit()
>>endwith
>>oExcel=NULL
>>release oExcel
>>

>
>Good idea,
>
>Apparently on one of the 2 problem sites (the problem goes away when they re-boot). So this doesn make sense. Thanks.

I cannot see why it doen't make sense: how would you then explain that reboot helped? My guess is that while rebooting the hanging Excel instancies were closed.