Shouldn't that be:
FileStructure = "\\CMASERVER\Data\Louise\SLA\" & msCustomer & "\" & msDate & "\" & msDateFull & " - " & msJob & "\Measurement Report\" & msMethod & " Measurement Report.xlsx"
FileMove = "\\CMASERVER\Data\Louise\SLA\Report Masters\" & msMethod & " Measurement Report.xlsx"