Mavericks 10.9.5 update just came out and I updated my Mac Clone. I have Google drive running in the background and the desktop icons keep flashing on and off, the Finder icon no longer works. It doesn’t happen in 10.9.4. Turn off the Google Drive, the flashing desktop seems to stop but the Finder still doesn’t work. So, don’t update 10.9.5 just yet until all the bugs between Google Drive and Mavericks are straightened out.
