It meant that the program was trying to display a value in a list that was no valid.

Without knowing exactly what forms were open when you closed Payables, and what method you used to close the application, it's impossible to know wexactly what caused the problem.

If you are worried, then run an integrity check and make sure that everything is OK (I'm sure it will be).

Perhaps over the next few weeks, you will determine exactly what sequence of steps can be used to re-create the problem, then we can go looking for a solution.

Thanks for using Adagio!