Cannot get pointer to RooFitResult

Hi everyone,

I started learning RooFit so this might be a stupid question.

I created a PDF like this:

w.factory("Gaussian::g(x[-10,10],m[-10,10],s[3,0.1,10])");

Then I created a binned dataset like this:

TF1 *gaus = new TF1("gaus","TMath::Gaus(x,1,2.5)",-10,10); htemp->FillRandom("gaus",10000);
RooDataHist data("data", "Random data",w::x,htemp);

Then I try to fit the PDF to the dataset like this:

RooFitResult *result = w::g.fitTo(data);

But I get a NULL pointer for result. The htmldocs suggest otherwise. I have tried repeating the above without the factory with the same results.

Any ideas as to what could be wrong?

ROOT version: 5.28/00e

PS: I was following the RooFit quick start guide by Wouter.

-- 
Suvayu

Open source is the future. It sets us free.