I\'m not sure what I did but I added an IBOutlet to display an additional attribute in a TableView cell. When building the application I get the following error message...>
This can happen when a source is compiled in your target twice, or if it is built in two separate targets. You can verify this in your target's build phases, or remove it from the target and then re-add it.
Update
Kasas pointed out a new Xcode feature (in an Edit which other reviewers rejected), where Xcode can detect some such cases for you -- Simply "Validate" the target or project settings. If found, Xcode will offer to remove the redundant compilation for you. Thanks Kasas.