Some people have problems with them others don't . I'm in the 2nd group. I have wondered whether the same group has the problem when saving submerged. Again some people suffer CTD's when the open a game saved submerged others don't. Just lucky I guess not to fall into either camp.
If you want to take a look at GWX go to the site linked off my sig.
http://www.thegreywolves.com/gwx3/legacy.php
http://www.thegreywolves.com/gwx3/