I am unable to alter a libreoffice calc document and 'save as...' and change the name. I can only save as the original name of the opened doc. What am I doing wrong?

The version is the most updated LibreOffice Calc. OS is ubuntu 14.04 LTS

do you have access to the folder? is it a network folder? well, could you post a screenshot? Is the file locked already by somebody other (and you are in the “read only mode”)?

I’m additional a bit confused. a Calc document with the file extension *.doc? (or is doc in this case “document”?)