Hi Ron,
Thanks for attaching the file, and sorry about that 10 MB limit.
There is a bug in the Combine Systems macro that you can see on the System Costs page of the Generic System case. The macro sets the value of the calculated plant cost (2 in the screenshot below) instead of the input field (1). You can work around the problem by typing the value in (1) -- in this case type 4,913.79 and then
click the Simulate button in the Generic System case (don't run the macro again):
If you are modeling a PV system with up to four different array sections, you should be able to model them in a single case using subarrays on the System Design page. Is there a reason you are not using that approach?
Best regards,
Paul.