Can you tell me the exact version of OS X you are currently running, please?
Click the Apple logo in the menu bar at the top left of the screen
Select "About This Mac"
In the window that opens, look for the "Version" information. Please let me know what it says.
Click "History" in the menu bar at top of screen
Select “Clear History...”
Click the "Clear" pop-up and choose "All History"
Then click "Clear History".
Hopefully that will resolve the issue. If not, please let me know.