Try un packing the download or redownloading the installation files. It sounds like something went missing.
It looks you are using the wrong setup.exe. When you unzip the downloaded folder, you get a folder structure as below :
Please use the setup.exe that is present in the parent folder. This will determine your PowerPoint and install the corresponding 32/64 Presenter.
Do not use setup.exe present inside the folders Presenterwin32 or Presenterwin64.
Hope this helps.
Adobe Presenter Engineering Team