After the newest version installation (8.40.0), I tried just today to open Plato.exe (the 64-bit version). A window pops up identifying Plato, then closes without any messages or crash dumps. Just quits.
I was able to open the 32-bit version of Plato without issue.
I wonder if this might also be related to my other issue with /CHECK_WINIO on another thread.
Bill