I have the same problem as LSky. I start up the launcher but I get the same error message and the game isnt bordered-windowed. I should say that its better than default - the game now goes over the task bar at the bottom, and is much more responsive.
The only thing Im not sure of is if its launching DX9. When I use the launcher I dont get a choice so Im just assuming that I am using DX9.
Here are the value get from the tester -
Offset @ 0x007656BC (1B): 0x94
Offset @ 0x007656BB (8B): 0x4C2C18AC1940F
Offset @ 0x00400000+0x0672F624+0x80+0x44C+0x58+0x4+0x0 (4B): 0x0
Window Coords - X:0 Y:0 W:1920 H:1080 horC:960 verC:540
Edit: When I press "try BW mode in case both values have read correctly" nothing seems to happen, but when I press "Try BW either way" it seems to work after a few seconds. However it still shows the 'Civ V title screen not detected yet, checking memory address.. timer' and it covers all the civ info (happiness, faith, culture, etc). I expect that I shouldnt need to use the tester to get the full BW mode.
Now that I've been playing the borderless windowed a bit there are some issues. When you get to buttons towards the bottom of the screen the offset gets kinda extreme. IE when you open the tech tree and try to use the scroll bar the mouse has to be clearly above the scroll bar to select it.
Also, scrolling by mousing over the edges does not work at all - I think you really gotta fix that.