Uncaught TypeError: Cannot read property 'toFixed' of null

There is an issues with the generated page, on this function

$(".olsr2lb" + number).text(function() {
return rgrs.regRSquare.estLowerBound.toFixed(3);
});

My haskell code I was trying to measure
http://pastebin.com/kie5sn6u

Here's the generated code
http://pastebin.com/DwL6Ru9t

I'm compiling with this command on windows 8.1, using GHC 7.8.3
ghc TP2.hs -threaded -O2 -fexcess-precision -optc-O2