Previously, the screenshot property list could be found at:
In Mavericks, this file no longer exists. In the past, I used to be able to manipulate the location and image type of screenshots using the .plist mentioned above. Where are these values now stored? Do I now need to create the plist in order to manipulate these variables, IE:
defaults write com.apple.screencapture location ~/folder/of/my/choice
To be sure this was not an issue with my user account, I created a new admin. account and tested.