Different results despite same project and meteo files

[gdtrfb]

I've downloaded a trial version of PVsyst and imported a zip file containing project and meteo files that a contractor previously used for an analysis. I am getting very different results relative to the contractor's results. When I compare the PVsyst report that the contractor provided to the report that I generated from the trial version, I see many fundamental differences (for example, differences in the number of 10 trackers, etc) in addition to very different results. It seems like my version of PVsyst does not want "accept" all of the assumptions used in the contractor's analysis. Any suggestions for how I can replicate the contractor's results? I'm hoping there is a way to simply import their files and run the analysis on my version of PVsyst.