This problem is caused by inactive Paper artist app. Gallery app and Paper artist app is linked. If Paper artist app is off then the Gallery app will force close or crashes when you hit the share menu. To fix this problem you need to turn back on the Paper artist app. Following these steps below to fix the problem:
Go to >>>>
2. Tap More.
3. Tap Application manager.
4. Swipe the screen to the left to find the Turned off screen.
5. Scroll down to find Paper artist app, then tap it.
6. Tap Turn on button to turn this app on.
7. Restart the phone.