The OS X Yosemite v10.10.5 Update is recommended for all OS X Yosemite users.
The OS X Yosemite 10.10.5 update improves the stability, compatibility, and security of your Mac, and is recommended for all users. This update:
- Improves compatibility with certain email servers when using Mail 
- Fixes an issue in Photos that prevented importing videos from GoPro cameras 
- Fixes an issue in QuickTime Player that prevented playback of Windows Media files 
For detailed information about the security content of this update, see Apple security updates.

 
                 
                 
                 
                