I am still using the 2010 Simply accounting because it is standalone, offline.

This Year - my accounts Receivable stopped working.   If I create a PAY LATER customer, the invoice doesn't get a transaction # when I process it, and the balance owing doesn't show up in the Accounts Receivable,  it only shows up in the Customer's account.   I can still pull up the client to make the payment after.   But the "Sale" doesn't show up in the Sales Transaction report either. 

Is there a way to fix this bug?   It has never done it before in all the years I have used it.