Sheets("Sheet2").Range("AA1") = "Note"

This might have already been covered but I can't find it anywhere. Anyways, I get error 9. It works all the way to Z1 and if I try to input it to AA1 there is a problem.

Sheets("Sheet2").Range("X1") = "ShippingTerms"

- works.

Sheets("Sheet2").Range("AA1") = "Note"

-This does not.