That too was a problem in C2C (entering black tiles) but it too was addressed and fixed by koshling.
@Rezca,
When this comes up again take a screenshot before and after you give movement commands. Also a copy of the savegame at that time too and a description on how to duplicate the problem.
Thanks.
JosEPh
The savegame I posted earlier does the same thing, but here's some screenshots. THis happened with every unit I selected (Spies, galleys, workers...) every turn since the game started.
Right here I selected three military units, then told them to move to Ashur's capitol which was surrounded by black tiles. The game told me that was an invalid move route and offered no alternatives - like trying to tell a galley to enter the ocean when it can't cross ocean tiles yet, or having a Warrior try to move onto a new continent with no land route (Or Sea Tunnels) there.
It's very easy for me to reproduce - I just start a game, select a unit, and tell it to try moving into the black shroud. Immediately the game tells me they can't move there
Shown attached is where the units were, and where I was trying to move them. Again, this happens with any unit and at any distance. If there is some path there they'll try taking the long way around even if the black shroud is one tile thick.
*edit* I'm back on the test game going for the Renaissance Era, but none of the techs I can see state which bring you into what era upon researching, so I can't tell if the AI are nearing that era or are already in it (Alfonso is running around with Gunpowder and a few others in 626AD having gotten Gunpowder about 6 or 7 turns ago, but I can't tell if he's still in the Medieval or not. I can't see "Advances to 'X' Era" on any of the techs in the Technology Adviser... I don't know if it's something I did or what. The only file I removed from AND was a custom map so it can't be that.)
Also I've got four AIs at war with me now, Alfonso's army dwarfing mine, so barring some miracle or a cheat I don't know if I'll be making it to the Renaissance ^^;
*edit 2* I managed to snatch Gunpowder from Alfonso with a spy, but he's up Compass, Metallurgury, and who knows what else on me and before his statistics went hidden again he was at 0.4 to me on the power graph. He's got 22+ cities, and is producing units far faster than I can. I managed a sneak attack on him and razed one of his border cities (A size 18 too) but it didn't even slow him down. Ragnar who was a third of my power for the entirety of the game is now also dwarfing my army, Louis is demanding cash tributes from me and I feel he'll dogpile on me eventually too (He's already got -5 from repeated war declarations on his friend, but that friendship was completely one-sided. His alleged friend hated him for close borders, trading with their enemies, and religion and eventually declared on Louis. Alfonso swallowed up all of their cities pretty fast with Louis.)
I don't think I can turn this around with my skill in Civilization, at least not without the World Builder

The only good news right now is I vassalized Holy Rome a few turns before Alfonso declared on me and he's been actually hitting Aztec's cities pretty hard (One of Alfonso's vassals) while I'm busy at the front.
I've been in Folklore pretty much the entire game, for some reason. Never bothered changing out of it, which is a first for me.
*edit 3* Yeah another edit, but I just realized what probably made Alfonso go absolutely nuts in this game. I checked the Victory Conditions and settings screen and it said it was at Prince difficulty. Earlier around the end of BC years I noticed that Flexible Difficulty was on and I turned it off, but I didn't realize it had changed the difficulty that high. Who knows how long it's been running above Noble =/
Also I should add I have no idea how the threshold and other Flex-Difficulty works. I've only ever seen it change once or twice during a game, and usually going up.
I changed it back to Noble and hope that now I might be able to regain my lost footing - but it doesn't help that he's got 24 cities while the second AI only has 12 - and I only have 7!
*Final edit, I swear* So much for that theory. Two turns after I changed it back to Noble, with plans to huddle up in my remaining cities until I could adequately fight back, Ragnar declared war followed shortly by Ashur. So... yeah. I can start a new Huge-Noble game to make another test, with hopefully less disastrous results ^^;
I've never ever been driven down by the AI that quickly before, except for in one game when I tried out one of the Realms Beyond epics, but never in a normal game.
As a final note, is there any way to fully remove the Options Shortcut Reminder? It seems that every new game I start it insists on sticking around even with the Options Shortcut Reminder checkbox disabled in the options, and I have to fully exit out of Civ and restart just to get rid of it, which takes 2 - 3 minutes to do. Simply reloading the game doesn't remove it.
For me I can reproduce this problem easily. If I start a game and then exit out of it and start a new one, the shortcut reminder comes back and never goes away until I restart Civilization. Starting a new game freshly after launching Civ does not have this problem.