In System Preferences, when I try to change "Recent Items" count from "none" to any other value it is not saved. I can change it, but when I close System Preferences and open it again I still see "none" in "Recent Items". What can be the problem? Is there a way to change it manually? I am using OS X 10.11 "El Capitan".
3By the way, if you want to take a screenshot of an individual window quickly, you use Cmd-Shift-4, like you always do, but next press the spacebar, and click on the window you want to take a screenshot of. It also looks better this way IMO.– RedEagle2000Dec 16, 2015 at 0:59
Sounds like the .plist file is corrupted. Go to Library/Preferences and drag the file named com.apple.recentitems.plist into the Trash and empty it. When you open System Preferences again a new com.apple.recentitems.plist file will be created and you should be able to change the number of Recent Items without issue.
unfortunately, it does not work on my pc. what is the key inside the file? I may try change it manually. in current com.apple.recentitems.plist has only, "<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict/> </plist>"– AdemDec 16, 2015 at 6:22
2it was not working. but after I restarted pc, it was working after than.– AdemDec 22, 2015 at 11:56