I just updated my old CameoD4 (3 May 2017) to the latest Daslight4 (2 Aug 2018) on El Capitan.
As soon as it starts, a confirm ask me to update the firmware; if I press Yes, Hardware manager tries to start but instantly crashes.
I also try the latest beta (5 Feb 2019), but after the first daslight logo it crashes... so even worse!
I suspect the OS is too old, but on the website it says MacOS 10.10+
Thanks a lot!!