I cannot see any problem in the tar file that I posted in an earlier mail.
In attachment you will find another small tar file containing
-goex1 the 3 lines script generating the dictionary and compiling ex1.C
-ex1.C the standard pythia8 example modified to generate some histograms
-pythiaROOT.h pythiaLinkdef.f files to generate the dictionary and used by goex1
If you run it on a 64 bit platform, you must have pythia8 compiled with-enabled-shared and -fPIC
Rene
ex1.tar.gz (1.28 KB)