IPhoto has no photos

Question

Each time I open iPhoto, all I get is the menu bar across the top. No window of photos. Nothing else. And all of the functions are grayed out when I pull down the top menu items. I have tried to hold every key combination I could think of down while opening to get it to rebuild the library, and it's unresponsive. It's v9.6 and I'm running Yosemite.

Answer 1

First  give this a  try:
1 - delete the iPhoto preference file, com.apple.iPhoto.plist, that resides in your
     User/Home/Library/ Preferences folder.
2 - delete the contents the following folder: User/Library/Containers/com.apple.iPhoto
3 - reboot, launch iPhoto and try again.
NOTE: For Mavericks and Yosemite,  go to your Home folder and use the View ➙ Show View Options menu to bring the this window:
where you can check the Show Library Folder checkbox.
If this fails continue with:
Open the iPhoto Library package with the  Finder as shown in this screenshot
locate the Masters folder and check inside to see if the original files are there. If the folder is empty you need to restore your latest backup copy made prior to this happening.
If the original files are in the Masters folder you'll need to do the following:
Starting over from scratch with new library
Start over with a new library and import the Originals (iPhoto 09 and earlier) or the Masters (iPhoto 11) folder from your original library as follows:
1. Open the library package like this.
2. Launch iPhoto with the Option key held down and, when asked, select the option to create a new library.
3. Drag the subfolders of the Originals (iPhoto 09 and earlier) or the Masters (iPhoto 11) folder from the open iPhoto Library package into the open iPhoto window a few at a time.
This will create a new library with the same Events (but not necessarily the same Event names) as the original library but will not keep the metadata, albums, books slideshows and other projects.
Note:  your current library will be left untouched for further attempts at a fix if so desired.