Dear Mr Troyer,

I've already written to you some months ago to ask you how could I perform a MC classical simulation of the O(4) model.
I've edited the file spinmc_factory.C as you suggested and typed make install to make it work.
The installation of every packages seemed to be ended well. So I prepared the input file with MODEL O(4) but It didn't  work.
It seemed as if the simulation started in the proper way but then it stopped with this error:

impossible to perform the simulation, impossible to find the O(4) model in the file
factory.C

What is this file? Where I can find it and how can I edit it?

Thank you for your help and sorry for my several requests of help.

Best Regards
Rachele Nerattini