Regarding the IronWorks question, CAII is able to report which towns can build which Wonders, so the information is definitely extractable from the save, e.g. perhaps by looking at the build-list for each town.
Edited to add:
@Flintlock:
I started my current solo game (Mayans, DG, mostly-all random settings) to compare gameplay using the unpatched Firaxis .exe, with gameplay on the C3X_R10-patched .exe with all options turned to 'Firaxis-basic' (i.e. no AI-artillery, no AI-Armies), at least in part to test whether it would be 'safe' to use the patch-associated stack-commands, improved GUI (Terrian-chop status) and "no-haggle" Diplomacy, while also playing SGs.
But at 950AD, I started getting what seems to be a consistent crash over the interturn, which
seems to be associated with the C3X_R10-patched .exe.
After hitting End Turn (with most animations turned off, but AI-moves shown), the crash occurs very shortly after the Byzantines finish shuffling their land-units towards/across the Jungle-chokepoint overlooked by my Horsemen -- possibly during the Japanese(?) movement-phase, just before a Dromon-pair is attacked by a Japanese Galley. I got this crash three times on three separate crash-and-restarts. The second restart was on a freshly powered-up computer.
After the third crash, I exited the game, deleted the patched .exe, renamed the Firaxis-backup, then restarted using the Firaxis .exe. This time the crash did not occur, the Dromons sank the Galley, and my research on Banking completed. I've attached the crashing-save below, plus the one I made just after the Firaxis-completed interturn, for you/ others to test.
Further
EDIT
Just tested the same 950 AD savegame on C3X_R9 (I still have that folder and all its files inside my
../Conquests folder), and got no crash using that, either -- at least with the C3X_R9 .ini.
But when I replaced that C3X_R9-folder .ini with the one from the C3X_R10 folder, two things changed: I got a notification when starting the game about the "lost turn" bug not being recognised -- and the crash re-occurred. So I've uploaded the .ini I was using as well (I appended the ".doc"-extension to the filename to get it to upload to CFC, so that would need to be deleted to make the .ini usable again...)