[Rivet] rivet fails on (Pythia8) HepMC files

[Hendrik Hoeth]

Hi,

I'm trying to run Pythia8 events through the current head version of
Rivet. Rivet fails like this:

$ rivet -a DELPHI_1996_S3430090 -n 2 lep1.hepmc 
INFO:root:Reading events from 'lep1.hepmc'
Traceback (most recent call last):
  File "/griddata/gridsoft/local/hendrik/installation/local/bin/rivet", line 335, in ?
    firstBeamIds = rivet.beamIds(evt)
TypeError: Expected a pointer
$ 

That's a CentOS 4.6, 64bit machine, swig-1.3.21, python 2.3.4,
gcc-3.4.6. Yes, that's kind of old, but it's a grid cluster, and
physicists' operating systems are supposed to be old, aren't they?

Is this problem related to
http://projects.hepforge.org/rivet/trac/ticket/259 ?

Any hints how to solve it, except for installing local versions of swig
and python myself (not even sure if that helps)?

    Hendrik

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