[OMP 3.1.2-4] Custom report generator output is empty


we are testing the statistics part of OMP.
Using the custom report generator (click on Generate custom report in Statistics>Report generator) we always obtain a csv with no data after column name, despite the options we set.
If we click on “PKP Usage statistics report” link we obtain a csv with data.
Can anyone help?
Best regards,

We seem to be having the same exact problem. Same version of OMP as well. Is this perhaps adressed in later versions of OMP?