installing presenter

I have a new 64 bit PC with Windows 8 Pro installed. I have MS Office 2013 installed. The version of Powerpoint seems to be a 32 bit version (see attached screenshot)

 So far I cannot install Presenter. I have followed the instructions in the Articulate link by selecting the options in Powerpoint but I get errors (see attached image).

Any clues as to how I can resolve this? Regards, Guy Leonard