Okay, maybe we weren't clear the first few times. WHAT DID YOU DO? Again, you gave a ton of text without any useful information. Obviously you edited something, but what? Give exact answers, not just vague "tweaked the map" type statements.
Were you just adding more resource deposits and such, or throwing on a few more Forests, or was this tied to a specific mod (say, one that adds new strategic resources or techs)? Were you changing the number of players involved (say, adding more city-states)? Were you changing what certain civs start with?
Did you try actually checking any of the existing debugging methods, like FireTuner or the diagnostic log files? When a game crashes during loading like that, it generally means there was something invalid about the map or the mod contains some critical XML error. Maybe it was missing one resource entirely, maybe there was an invalid start location, maybe you Deleted a tech without removing its references, who knows. FireTuner will usually tell you if you do something like this, and the logfiles catch even more. This is what these files are for, so if you never even checked those, then I'm not surprised it crashed.
And yet again, attach the files. We can't just take your word for it that you didn't screw up the start locations or map settings or something. Everyone who posts here about a problem with their mod is SURE they did it right, and invariably they made some simple little mistake; it's a natural consequence of writing code, where your eyes tend to skip over the parts your very familiar with, ignoring obvious errors in the process. So zip up the files, attach them to a post, and people can look at them to see what you did wrong. But if you hadn't checked any of the debugging tools mentioned above, then do that first.
