Thanks for reporting this error, it was a bug in the simulator. I just fixed this bug concerning the FFR scheduler in +network_elements\resourceBlockGrid.m. Please re-download the simulator to get these changes.
Since I am using the v1.9 Q2-2016 version of the simulator,
can I use the FFR scheduler simulations properly
after downloading the legacy version of the simulator and replacing the resourceBlockGrid.m file with the newer one?
Or, do I need to re-download the whole simulator of the v1.9 Q2-2016.
I would suggest to re-download the updated v1.9 Q2-2016 and replace the corresponding files: resourceBlockGrid.m and in +utils/ffrUtils.m.
Please contact email@example.com to get the updated link for re-download as there have been an update recently and the old link is not available anymore.