I have a worksheet, albeit a very full/big worksheet, with lots of formulas
referencing cells and ranges in an adjacent worksheet. I need to insert a
couple columns but when I do a copy and an Insert Copied Columns, it won't do
it and gives me an error about losing data if I do that... etc. It also says
something about Blank cells... It mentions clearing out/emptying the columns
to the right, but I obviously can't do that and maintain all my formulas, etc.

I've searched the Microsoft help pages to no avail.

Any ideas?
Do I have too many columns, or something?