IPhoto not launching

Question

I purchased a used laptop MacBook Pro off of ebay. It is running OS 10 7.5. All programs seem to work great except iPhoto. When you launch it, it says iPhoto cannot be opened beause of a problem.  And then it tells you to try reinstalling the software. So I went to the APP Store downloaded iPhoto again and still get the same message. Can anyone tell me how to fix this?

Answer 1

As a test  launch iPhoto with the Option key held down and create a new, test library.  Import some photos and test to see if the same problem persists. Does it?
If it doesn't then your current library is the problem and needs to be repaired. Apply the two fixes below in order as needed:
Fix #1
Launch iPhoto with the Command+Option keys held down and rebuild the library.
Since only one option can be run at a time start with
Option #4 and then #1 as needed.
Fix #2
Using iPhoto Library Manager  to Rebuild Your iPhoto Library
1 - download iPhoto Library Manager and launch.
2 - click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
3 - Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option.
4 - In the next  window name the new library and select the location you want it to be placed.
5 - Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments.  However, books, calendars, cards and slideshows will be lost. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.
OT