I have customised the 'edit Customer' screen, and have just encountered a strange problem. When selecting a customer and opening the edit Customer screen for the first time from the contacts list, the 'customer.balance' field displays the balance properly. Thereafter, choosing any further customer records from the customer list, including the original one chosen, causes the balance field to display 'NaN;', although other fields appear to update properly. This does not change the data in the balance field, as resetting the account will cause it display properly again one time.During all this, the balance does display properly on the customer list grid.
Any thoughts as to what might cause this?