In fact, the only convictions I'm aware of under the mandatory reporting act were for individuals I prosecuted. They all pleaded guilty and were sentenced to different things with respect to that.
I think part of the problem is that it's always hard to prove a negative. Proving that somebody failed to report is difficult. However, with the obligation existing and being much clearer about whom the obligation applies to, it should go some distance in ensuring that people do make the reports. Hopefully, then we won't have to have any more prosecutions for people who fail to do so.