I have now tried the updated plug-in with the aforementioned Mac Pro setup and can confirm it works.
I purchased the Mac version - I'm running a Mac Pro with El Capitan 10.11.4 (15E65) and Adobe After Effects CC 2015.2 (13.7.2).
I installed it by putting the extension to /Applications/Adobe After Effects CC 2015/Plug-ins/Effects
Every time I make a comp and select PixSort as its effect, the program immediately crashes.
/Library/Logs/CrashReporter doesn't have anything inside, so I can't give you any diagnostics.
So I updated my Adobe After Effects* to version 2015.3 (220.127.116.11). Tried again, crash happens, Logs absent.
So, I googled around and I realised that I have to manually enable the logging feature. It's here: http://pastebin.com/Y6zGmkMT
*) I realise updating isn't necessarily the wisest thing to do because now I can no longer test the previous version, but oh well. At least I can confirm that the crash happens with both versions.