Unrecognized field name

I've just cloned the repository and tried running a few of the demos, but I keep getting the following error:

WARNING: options.nlpOpt.GradConstr is not a valid option
WARNING: options.nlpOpt.GradObj is not a valid option
WARNING: options.nlpOpt.DerivativeCheck is not a valid option
WARNING: options.nlpOpt.GradConstr is not a valid option
WARNING: options.nlpOpt.GradObj is not a valid option
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Running OptimTraj, iteration 1
  -> Transcription via trapezoid method, nGrid = 10
Unrecognized field name "GradObj".

Error in directCollocation (line 26)
flagGradObj = strcmp(Opt.nlpOpt.GradObj,'on');

Error in trapezoid (line 74)
    soln = directCollocation(problem);

Error in optimTraj (line 180)
            soln(iter) = trapezoid(P);

Error in MAIN (line 167)
soln = optimTraj(problem);

That's specifically the printout from the gradientsTutorial.
I've checked that problem.options(1).nlpOpt.GradObj is set to on before being passed from Main.m > optimTraj.m > trapezoid.m > directCollocation.m. I also haven't modified the files in any way. I just opened Main.m in the demo folder and hit run. Is anyone else experiencing this or am I missing something?

Start by running the gradientsTutorial demo from Main.m and trace the reported call path through optimTraj.m, trapezoid.m, and directCollocation.m. Check how problem.options(1).nlpOpt is passed between these entry points, then verify the demo completes without the invalid-option warnings or the unrecognized GradObj error.