Today's SVN
This is an autosave at beginning of the turn.
I have completed Leonardo's Workshop so it gives me menu with free tech selection, but when i choose Clockworks it says in log - "You have already chosen your free techs"
Savegame attached
This is actually a very old bug, which means that free tech choices that occur as an autosave happens do not then work when said autosave is loaded. Fix will be on the SVN shortly.
Interestingly your save crashed on load for me, which I also have a fix for, which brings me on to...
OK NEW SVN dll:
1st One (StrategyOnly AD-0490) still CTD upon loading, savedgame, mini and BBAI in Zip
2nd one (Japan) when clicking on next turn CTD (game/mini/BBAI in zip)
these were on 2 before the dll but changed it to 4 and got these.
I have 10 more game to look at . . . SO
The first one's minidump doesn't tell me anything useful, but interestingly Talin's save above also crashed on load (for me), which I have a fix for, so it's possible that will also fix yours.
Edit - nope that wasn't it, and THAT save crashes for me too, but it does so BEFORE any multi-threading is even involved, so it seems to be an unrelated issue. Given that it's happening somewhere in the game engine before the save even loads fully I suspect a broken graphic somewhere. I'll see if I can find some way to pin it down, but there isn't much to go on...
The second one DID have a useful minidump, which points a finger, but isn't completely definitive. I have a fix for something I suspect may well be the cause.
Will be on the SVN shortly...