Hello,
I had this problem for the first time a long time ago. I couldn't solve it. It occurs when I want to download worksheets through the server, but only with one or two of them especially.
I tried, by the past, to create a totally new worksheet, to copy and paste all the contain of each cell and save and try again to download, the same problem occurs.
It's really annoying, I searched, I didn't find anything on the web.
Any solutions ? Thank you for anyone who has the solution.