Zooming out on map causes my game to crash

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Zooming out of the campaign map crashes my system, I've created multiple new 
starts and the problem can be reproduced. I tried playing just zoomed in but 
it's very difficult to see where I'm going. I can play uninterrupted with no 
crashes if I stay very close to the map. Mid-length or fully zoomed will crash 
me.

What is the expected output? What do you see instead?
The sound stops and then the screen turns a brownish color, Alt+F4 and 
Ctrl+Alt+Delete doesn't work for a soft log, eventually it restarts my machine 
or I have to perform a hard log of the system.

What version of the product are you using? On what operating system?
Current SVN

Please provide any additional information below.
Win 7 64bit
AMD Phenom II X6 Core 1055T Processor 2.8 GHz
8 Gigs of DDR2 (I think, might be 3)
Radeon HD 7870 2GB GDDR5 (Double Black Diamond)

Original issue reported on code.google.com by charlie....@gmail.com on 8 Mar 2013 at 4:35

[GoogleCodeExporter]

I've been updating my SVN Daily, this issue seems to be fixed.

Original comment by charlie....@gmail.com on 10 Mar 2013 at 1:01