Power Point is installed. (Opening the PPP from the desktop works fine. It wouldn't work without Power Point Viewer would it?)
Right clicking on the attachment from in the email I only have the following options;
No option to 'Open with'.
I have just tried opening with from the saved attachment on the desktop, clicked the ' always open with this programme' But still cannot open from the email.
I have sent these Power Point Presentations to others and they have the same result, I usually advise them to save to desktop and open from there, if I could tell them how to cure the problem my street cred would increase 100%.