I looked into the Keynote help: iT seems to be a feature and not a bug:
Add an image
- To add an image, do any of the following:
- Click Media icon in the toolbar, then select an image from your iPhoto library.
- Drag an image from the Finder to the slide.
- From the menu bar, choose Insert > Choose, then select your image.
- Click in the bottom-right corner of an image placeholder, then select the image you want to add.
The Media Browser seems only to allow to add photos from iPhoto libraries. So you could try to open your Aperture library in iPhoto to make it the current iPhoto library. Perhaps you can then add photos from Aperture. I tried; adding photos from iPhoto works well.
That is only the way for a few photos, not for a complete and organizate library.
Not valid if you have (like me) all the photos (arrownd 6600) in an Aperture Library. Can insert all that you want, but not pictures inside de Aperture Library.
Traying some things i think the problem is the new pakage of iWork aplications. In the previous numbers, pages and keynote you can still work with the new Aperture Library.
I've found a workaround.
You need disk space and some time but it works:
Be advised that your should backup your library first.
not for a complete and organizate library.
It is. Your Aperture library is also an iPhoto library. There is no need to import anything to iPhoto. Just use your Aperture library from iPhoto as well and you will see the Aperture library in iWorks, only, it will be called iPhoto there.
It's not… Both archives share the same format but they have a different extension, version and headers.
If your photo library comes from Aperture (.aplibrary) it will work in iPhoto but iWork won't see it…