[bug][0.77][missing grafic] The river grafic is missing from this river.

The river grafic is missing from this river.  In other games, I was able to see the river grafic.  Attached is save game that shows the missing river grafic.

Save games has start turn and a few turns in showing a dock being built.  The tiles look like normal grass land tiles. Also attached a picture of the missing river.

I continued playing and found a river with the correct grafics to the NW.

http://dl.dropbox.com/u/59805065/2%2001%2012/debug.err

http://dl.dropbox.com/u/59805065/2%2001%2012/river%20missing.EleSav

http://dl.dropbox.com/u/59805065/2%2001%2012/start2.EleSav

http://dl.dropbox.com/u/59805065/2%2001%2012/missing%20river.jpg