Entity is not key value coding-compliant for the key

Question

    if (win) {
    // Game was won, set completed in puzzle and time
    // Calculate seconds taken
    int timeTaken = (int)([NSDate timeIntervalSinceReferenceDate]         


        

Answer 1

I did solve the same problem by delete and create the data model again and clean then rebuild again. I think the bug is caused by core data does not update some data inside sometimes.