Thank you very much for the answer. Indeed, I had problems with the latest FairSoft release. I will test those combinations as soon as possible.

The project we are building is called ATTPCROOTv2 (https://github.com/ATTPC/ATTPCROOTv2) and it is a general framework for simulation and analysis of active target experiments at low-energy. It contains a collection of libraries for pattern recognition and tracking, as well as many generators for low-energy nuclear physics. The framework was created within the AT-TPC collaboration at the NSCL.