there may be, or at least Excel thinks there is, something in the last column.
try selecting a bunch of columns past your data and deleting them.
A workaround for files that do not wnat to cooperate is to select all of
your columns to the right of where you want to add the column or columns and
move them to the right the number of columns you want to add.
The risk with this is that in inherited files there might be hidden data you
would be over writing. I would check with a method such as =Counta(columns
of interest), if the answer is greater than 0. there is something there.
