Nick Hodge said:
To be honest, I would replace the --- with a blank cell or a 0. It would
make life much easier.
Found the solution ...
Unlike Quattro Pro, from which I am transferring 10 years worth of work,
Excel apparently can't pull data from separate sheets if some cells contain
text when using a simple formula such as
"=+'1992'!AB11+'1993'!AB11+'1994'!AB11+'1995'!AB11+ {etc thru 2004}" IF the
data looks something like "---"+"---"+2,111.36+6,545.91+ {etc thru 2004}
where "---" is text, i.e., no value for that year. This returns a #VALUE!
message.
Going back and entering "0" won't work, as there is a distinction between a
zero value and no value that has to be maintained.
However, using a SUM formula works, eg
"=sum('1992'!AB11+'1993'!AB11+'1994'!AB11+'1995'!AB11+ {etc thru 2004}".
As I said, I'm converting from Quattro; had to ... it started making up its
own numbers.
Thanks again.