I have tried again with default MC settings. Did not import my previous library. Issue remains.
Components have been downloaded correctly. I found some discs that play normally. They are in the minority though. Around 7/10 discs crash MC instantly. The first disc I tried played normally, and that's why I said all components have been downloaded properly.
The issue only occurs in BD Menu Mode. Starting a BD in title mode, plays normally. Switching to Menu Mode crashes MC instantly.
I can only think as a cause a recently updated plugin that MC downloads and uses. But only you can tell me which that may be, and perhaps provide a previous version for me to try.
Since MC31 also crashes, I assume 31 and 32 download and use the exact same plugins. Please remember that these discs always played correctly in MC with no crashes, until recently.