VBA Help. Transfer sum to another sheet (LOG)

Please help, I am creating an invoice and log program for work, so farm my VBA works to do what I need it to do, except it is not pulling the sum of the invoice over into the log.

The cells on my Sheet1 (FC-80) contain sum formulas and they are throwing a REF#! error--I would like to pull the totals over into the log for each invoice created.

Please see my attachments for my current coding.