Here's beta.cc It has several adjustments for the MAC version, but all users should upgrade as there's a minor tweak for the PC, that traps a possible 'populate' error on PC too [although it's never been reported!]...
The MAC's annoying test messages have been removed, and there are radical adjustments to the MAC 'populate' code to try and resolve the MAC dialog problems. In testing alternative coding ideas on my PC I managed to reproduce the "dialog not populating" glitch that the MAC had been having. So in finding the fix for that on my PC I hope I have also found a fix for it the MAC [in fact the PC and MAC ruby code and html code sets are now virtually identical, but I have kept them separated for future stability/testing]...
I am 'moderately' hopeful that I've now got this MAC glitch licked... but only you MAC users' feedback will confirm it