I can't work this out
My macro just stops as if I have hit "Ctrl + Break", and a message tells me
"Code execution as been interrupted". So I press "Debug", and the yellow
highlight is sitting on an inoffensive and previously trouble-free line, and
if I hit F5, it continues on and finishes OK. This macro has always worked
well. I don't have any watch windows, and no break points.
Any ideas?

Thanks
Daniel