Ok folks, here is the challenge . I'm still having issues with the spreadsheet. It is stored as an xlsx file, it has 'lookup' and 'ref' links to other pages in the same workbook. I have loaded the following on my iPad - Numbers Excel Dos to Go (paid version) Numbers can't even open the file. Excel opens it but it takes ages and then shows as 'read only' ; but does say that I can edit if I subscribe to Office 365 for Â£80 a year Doc to Go does the same as excel. Surely, there must be a way that I can download, open, edit and save a simple spreadsheet to and from Dropbox! The file is OK. I can do this from my laptop and PC. I'm turning to you in my hour of need! Thanks.