Fix blank image preview with Quick Look in Mac OS X
If you have activated the text selection feature in Quick Look (pressing the space key) you may get a blank preview while viewing some images.
This can be fixed by running this command on the terminal:
defaults delete com.apple.finder QLEnableTextSelection; killall FinderIf you want to get the text selection feature back run this command:
defaults write com.apple.finder QLEnableTextSelection -bool TRUE; killall Finder
