I also got stuck with "this class is not key value coding-compliant for key"

iOS7 Xcode5

I encountered an error stating "this class is not key value coding-compliant for key" which I couldn't resolve. Upon researching, I found that many others had also faced this issue.

The error was due to a lingering reference to an old Outlet in the storyboard, but I couldn't find the corresponding line even after using grep, which left me puzzled.

Since the error only occurred in the Japanese environment of the localized app, I unchecked and deleted the Japanese resource in Interface Builder, then checked it again, and the issue was resolved.