Alright this is what i've figuered out so far, im no messiah so I don't have all the answers. this is just what i've learned form the editors.
v1.16 Civ3, v1.11 Editor, v2.10 Bic File -
This is the Editor that comes in the v1.16 patch.
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-If you have a .bic in this format your in luck. This file version can be used by the newly updated CivIII format (v1.17).
-This version cannot be edited by the Editor in the v1.17 Patch or it will become unusable as of yet.
v1.17 Civ3, v1.17 Editor, v3.00 Bic File -
This is the Editor that comes in the v1.17 patch.
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-If your bic has been saved in this format your out of luck. The CivIII 1.17 and 1.16 wont play your 3.00 .bic file.
-Furthermore only the v1.17 Editor will be able to open 3.00 .bic files at this time. Basically if you saved in v1.17 Editor, 3.00 bic format, then your gonna have to wait to play and can only use the 1.17 Editor that came with the v1.17 Civ3 patch.
v1.17 Civ3, v1.15 Editor, v2.10 Bic File -
This is the new Editor released by Firaxis after v1.17 Civ3 was released with the wrong Editor.
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-If you have saved your .bic file in this format you should be in luck. You can play CivIII with this format, as well as edit it properly with this editor version.
-This editor, however, cannot open the v1.17 editor, 3.00 bic files. So unfortunatly you can't fix that file with the new editor.
So as you can see, the only people who are really ****ed at this time when it comes to file access are the people with the v1.17 Editor, 3.00 .bic file. If you saved in this format, i'd say get comfy with only being able to edit it with the same editor you saved with, and don't think being able to play that .bic will be anytime soon. Who knows, Firaxis might be on the ball about this already, but so far I haven't heard a peep about them preparing to tackle this problem for those of us who had the misfortune of saving our .bic's with the faulty editor (v3.00 bic) that came with the patch. All in all I haven't had a reason to be angry at Firaxis ever, but this is one bad patch release, not that I could really hold it agains't them. Mistakes happen. Hope this cleared it up for some of you. happy modding