SHP

I've upgraded to the latest version and it won't allow me to enter text for the footer or note section. When I click on 'invoice' and then hit the 'foot comment' tab at the bottom, there is no default text showing or a white field where I can enter my text. It's just the grey background. I need to put my payment options in the note or footer field. When I hit preview invoice, in those fields are the express invoice default message of "thank you for your business" If I click on any other tab like the 'order' or 'quote' etc I can enter text in those fields, but the invoice tab does not let me do this. Any help will be highly appreciated