I have a process which generates Excel reports and formats them (well when it works it will). All goes well until i get to the following bit of code

With xlObj.worksheets(1).cells(1, 1)
.Copy
.PasteSpecial PASTE:=xlValues, Operation:=xlNone, SkipBlanks:=False, Transpose:=False
.Font.size = 14
.Font.ColorIndex = 5
.Font.Bold = True
End With

at which point I get Automation Error. The server threw an exception.

Any Ideas on what this means and how to overcome it?