please use Reply All so the help list stays on the email chain. I recommend copying/pasting the text of any Octave inputs/outputs, no screenshots. many people wont' see those. Finally this list's convention is bottom posting, not top posting. see
http://www.idallen.com/topposting.html
> I was given the disc by the school UNISA which came with as part of a study pack.
>
If possible I would recommend upgrading to a newer version before troubleshooting, as you may be working around already-corrected problems.
I don't know the details of fplot, so I don't know what is causing the errors. maybe someoene else recognizes the problem.