Particles Crashing

We’ve recently started going over particle systems at the college where I teach. Both at school and at home, having major crashing issues in Harmony 12 using Mac El Capitan. Anyone out there having this problem and, is there a fix?

Thanks

Which particle setup is crashing specifically?
Are you able to load default setups like Confetti or Bouncing-Balls?

What is the crash report saying?

All particle examples are coming in fine. There’s no particular error message other than “Toon Boom Harmony has quit unexpectedly”. It’s very random but very frequent as well. The problem seems to have started when we upgraded to Mac OSX El Capitan.