In the instructions for editing the example project (DBRoulette) in the Dropbox iOS SDK :
https://www.dropbox.com/developers/core/sdks/ios
contains the instruction:
"Your app key is also needed in DBRoulette-Info.plist file so the app can register for the correct url scheme. To do this, find the file under the Resources group in the left pane, right-click it and select Open As → Source Code. Replace the text APP_KEY with your app's key."
Using Xcode version 6.1.1
Does not seem to offer a "right-click" option and the displayed file does not seem to have the words "APP_KEY" shown anywhere.
Any help would be appreciated.