Q: Cannot access my photos at WD using iPhoto after Mavericks!

Are you using the latest iPhoto (version 9.5) that was released about the same time as Mavericks?  It appears as a new icon in your dock (different than previous OS X versions).

Try this:

Quit iPhoto.  Then hold the option key down as you press the iPhoto icon on your dock.  It will ask you to point to your iPhoto library, which is just what you want.

I think you are saying you used the option key, chose "Other Library" at the lower left when the box appeared asking which iPhoto library you want to use, and somehow that failed to get you to the WD library.

When you open iPhoto, you can do iPhoto > Provide iPhoto Feedback from iPhoto's menu.  It sounds like that might be a good way to proceed if you would like.

Oh great, that helped me also.

I had no access to iphoto any more because of missing rights.

Two things.

1) if you had installed the WD software that came with the drive, disconnect the drive and uninstall the software immediately. The old WD software will erase your drive under Mavericks.

2) when searching for the Library, is there a triangle button on the dialog? If so, click that.

I followed your suggestion and now I can restore from the alternative library.

However, each time the computer is in the sleep mode, after this the pictures are gone again on iphoto.

How can I keep them there?

....and when I use this library all new photos are gone.

When I repair the access rights, it still says I have no right to access.

I do have a back up.

iPhoto Library rebuild

Thank you.

This helped me, however, with Aperture.