It looks like I won’t be playing with the bridge-design contest software this year. I downloaded the software from https://bridgecontest.org/resources/download/, but was unable to run it. They’ve made their software so that it only runs on Mac OS 10.7.3 or newer, but my MacBook Pro is running OS 10.6.8. I suspect that there are a lot of schools out there running old Mac software also, so making the software run only on the new Macs is cutting out a lot of users (particularly in the less-wealthy school districts). This is a common problem with software developers—because they invest in the latest hardware and software, they assume that everyone else is able and willing to do so. More likely, they don’t even think about the number of people they cut out by writing programs that only run on recent computers, nor who those people are.
Note: there is a newer iMac in the household, and now that my son is in college I can get time on it, so I might install the bridge-design software there.
I know that I could also upgrade my 10.6.8 Mac (possibly even for free still), but I’ve heard from a number of students who did the upgrade last year or the year before, that the resulting laptop was far less reliable and much of their older software was broken by the “upgrade”. I’m not willing to have to replace large swaths of my functioning software just to play one game. I’ll put up with the pain of major changes to the operating system the next time I replace the hardware.