I tried using Lightroom for culling, what a time consuming PITA that was!
I uninstalled last build of PM and reinstalled the previous without problem too. I was a little concerned I'd loose all my settings, IPTC Stationery Pad etc, but all were there as before. Kirk will you update this thread when the new build is available with the fix? I'm in no hurry, happy with previous build, but currently ignoring the 'New Version Available' messages when I open PM.