I finally tried out the latest official release version 22.214.171.124 (Pro), and my conclusion is that it shouldn't have been released. Long story short, I rolled back to the version I had been using, 126.96.36.199 (Pro), and the results were much more sensible.
My problems with 188.8.131.52 include: - The software crashed twice (i.e. went into an endless loop and had to be shut down using Task Manager) when trying to calibrate my 85 f/1.8G (I noticed that the software had this mislabeled as a D lens). - For the three 1.4 lenses it did at least complete the calibration process (24, 35, and 50), it had a tendency to over-correct, based on my interpretation of the graph results and my results using version 184.108.40.206. - In my admittedly preliminary follow-up usage, calibrations based on version 220.127.116.11 are giving me better (i.e. sharper) real-world images than calibrations based on 18.104.22.168.
Has anyone else gone from 22.214.171.124 to 126.96.36.199 and had similar issues?