I hope someone can help/explain this problem for me. I receive my work instructions via email. Part of that email is an XL document that has formulas etc in the document. This received XL file is NOT protected from the office. When I receive it, I open, fill in the required information and save it as a job number. I do nothing else. When I send back to work via email, there are times that additional information needs to be input by office staff. For some time now they have not been able to add information as it says it is protected. Can someone please explain to me what is occurring, what I hay be doing to cause this problem and how do I stop it from happening in the future.