I started an economic agreement with Kraxis (the one with a trade route between capitals). Ended the turn and then I received a crash to desktop. As it was crashing the water dissappeared.
https://dl.dropboxusercontent.com/u/75549875/Fallen%20Enchantress/LegendaryHeroes0_87-2013-05-04T12-24-12_758.zip
Here is the crash dmp file. Will have to check to see if I can reproduce the error, but don't think that will happen.