Also to follow-up; if the number you posted for the file size of LWATTR'R is correct (5572), then this indeed would be an invalid size. 5572 minus 8 is 5566, which is not evenly divisible by 616 (you get 9.0324...).

To be a valid size for 9 staff members, the size of LWATTR'R would have to be 5552, not 5572.