iPhoto Folder/ScreenSaver HELP

Hi -

I have a folder in iPhoto (with 1700+ photos) that I'd like to make my screensaver. However, when I go to System Preferences and select Screen Saver and try to choose a folder it doesn't exist in my iPhoto options.

The folder does indeed exist in iPhoto.

Can someone please give me a step by step way of accomplishing this? All software is up to date.

Thank you -

Richard

Which version of OS X are you using? I'm on 10.9 and iPhoto doesn't appear at all as a choice for the Screensaver.

Here goes.

Yosemite, 10.10.2