[Rivet] 2D histograms, MAC and SLC5

[Sercan Sen]

Hi again, 

comments are welcome to understand / fix the below issue which is weird to me... 

I am running the same Rivet analysis (not a standard one) on two different platforms SLC5 and Mac 10.6, and not able to produce a 2D histogram on SLC5. It's fine on Mac. 

The 2D histogram throws "dvips: ! DVI file can't be opened" on SCL5 when I do make-plots ( or rivet-mkhtml which is the same in this case ). Because the related part of the aida file for 2D histogram looks empty. 1D histograms are fine and show up. 
    ............
    <dataPoint>
      <measurement value="-3.00000000e-01" errorPlus="1.00000000e-01" errorMinus="1.00000000e-01"/>
      <measurement value="5.00000000e-01" errorPlus="1.00000000e-01" errorMinus="1.00000000e-01"/>
      <measurement value="0.00000000e+00" errorPlus="0.00000000e+00" errorMinus="0.00000000e+00"/>
    </dataPoint>
    ...........

Exactly the same code runs on Mac and produce the correct histogram ! 

SLC5 is running on a AFS mounted machine and mostly use the libs from genser. I use almost the same versions of the packages both on SLC5 and on my Mac.  

the only differences are:

SLC5:  x86_64,  ROOT v5.26,  swig 2.04, 

Mac Snow Leo. 10.6: i386 libs with linked to x86_64,  ROOT v5.34,  swig 2.00, 

python is the same for both platforms which is v2.5, and also I use Rivet 1.8.1. 

Thanks, Cheers,
Sercan