Hello, I'm new to this forum

Hello to you all VSOs. My name is Fulvio Baldanza, I’m an italian Science teacher and I have been interested in variable star observations from many years. However this is the first time I’m writing on this forum. I generally observe with a pair of binoculars 10x50 of good quality. Some years ago I started to observe Epsilon Aurigae with my DSLR and used a beginne data reduction spreadsheet. Now I’m trying and use the new and more complete spreadsheet published in DSLR manual section, but after the downloading the file I can’t use it because many functions don’t work. Instead if I open the file before the downloading, all seems to work well. Could you please tell me how to fix this issue? Many thanks.