[SciPy-user] Error message I don't understand

[Christian Meesters]

Hi

I get this weird Traceback from my script:

Traceback (most recent call last):
   File "FP.py", line 111, in ?
     main()
   File "FP.py", line 67, in main
     fitter(OD,ml)
   File "FP.py", line 98, in fitter
     tck = interpolate.splrep(ml,OD)
   File "/platlib/scipy/interpolate/fitpack.py", line 339, in splrep
SystemError: error return without exception set

The "fitter"-function so far contains only this line which causes the 
error. 'OD' and 'ml' are array objects. Running the example code from 
the tutorial does not result in any error. (And looking into fitpack.py 
didn't help.)

Has anybody seen this error before and knows how to solve the problem? 
It's probably something really stupid, but I failed finding the 
solution.

TIA
Regards,
Christian