FreeCol is still alpha software. In plain English, this means that it is full of bugs. Some of these bugs have already been reported, but have not been fixed yet. You can find a list of these bugs, and report new bugs by using our SourceForge bug tracker.
Even in single player mode, FreeCol is a client-server game. The
communication between client and server can fall out of step. If this
happens, the server often tries to recover by requesting a
reconnect. If this occurs, please accept in order to continue
playing. In some cases, the game may come to a halt during the turn of
a computer opponent. If this happens to you, you can generally
reconnect to the server by using the reconnect option in the
game menu or by pressing ctrl-r
.