Hi, for some reason one of my work books is suddenly refusing to let me
use autofilter on all of my worksheets within the book - the option is
greyed out. It is also refusing to allow me to use the trace
precedents and trace dependents functions, it is almost as if the
option has been "turned off" by accident, but I dont know how to turn
it back on.

I would really appreciate any suggestions, I have tried looking at the
trouble shooting guide in microsoft but it doesnt really help....
HELP!!!!!

Many thanks in advance

Laura