[0.24] [Crash+bug] When entering a wierd red city

I found a wierd red city that had no control zone around it. (maybe a city from this new addition from 0.24: + Goodie Huts that display unknown/hidden cities and sovereign units) when entering it i got an empty question box with ust are you sure yes/no. On clicking yes the game crashed.

debugg.err http://pastebin.com/m5f2acfb9

dxdiag http://pastebin.com/m7114441b

screenshot of the empty yes/no question screen  link  (not sure it is very usefull, i didn't think of taking a screenshot before investigating the town unfortunatly and the game crashed just after)