Hello there,
It seems that in my case the crashes happen because of OutOfMemory. Well, GW2.exe is a 32bit binary running in 32bit windows OS translated by macos Cider(transgaming) app, which is - "Guild Wars 2.app/Contents/MacOS/cider is architecture: i386"). And it seems quite fair, considering that even native Windows client may easily take up to 3GB of RAM in WvW events (and this is without taking into account all the shared libs it uses).
The "mentioned here and there" solution of lowering down graphics settings to a level when GW2 starts to look like Quake I is not really a solution for me. And it does not fix the problem anyway. Will a 64bit client come anytime soon?..
P.S. How did I get all these cool stats? First of all a standard disclaimer: I take no responsibility of anything that may or may not happen to anyone in case of everything.
To turn stats on navigate to "/Users/<your_profile_folder>/Library/Application Support/Guild Wars 2/" and open "config" file in the text editor. Look for section "[d3dgl]", options: "ShowFPS", "ShowMem", "ShowGraphicsStats". Changing "N" to "Y" turns an option on and otherwise - off. Application restart required.
