Hmmmm. Just switched to the latest beta dev16485-9903 (from the previous one, dev16481-9881 ) and restarted the mission I was playing (Iris ... what an amazing mission, very happy to start from the top again, even though I'm only halfway through!), first thing I do is create a save game ... and bang! down it goes.
Nothing in the console log:
Changed location from '' to 'location_home'.
Switching to EFX 'location_home' (#15)
The ambient 'snd_home' (solitude_loop_z) for location 'location_home' is now playing.
The ambient 'snd_home' (solitude_loop_z) for location 'location_home' is now playing.
WARNING:LibJPEG: JPEG parameter struct mismatch: library thinks size is 584, caller expects 568
Segmentation fault (core dumped)
There was a very long pause before it crashed.
Will try again ... well, that was interesting, looks as if the saved game was good. However, played for a little, hit F4 and ... hangs and crashes again, messages as before. That's a shame.
Ah! Looks like the conversation above covers this very issue. Will go back to the previous beta for now.
Edit: Yes, can confirm that -9881 works and -9903 crashes when saving the game.