Thank you.  The box is checked next to mark all expenses billable, yet it's still not an option.

I get all the stuff about items, but really it's more practical for me to bill expenses directly.  I don't do it often, and I don't need to track job profitability.  I just occasionally pay an expense for a customer and want to add it to their invoice.

As I stated in my original question:  I have been doing this for years without a problem, and now- without having changed any settings- it doesn't work.  Is this a new update that doesn't allow it?