Donald Miles said:

Not had this one before, 

Spyed on Hamlet and follwed this with a raid, the spyuing failed and so I cancelled the raid , came up with the are you sure bit which I confirmed and showed on screen as cancelled BUT raid continued and troops wiped , Bo Ho. But surely this sohuld not have happened.

This happens once in a blue moon to all.

Your computer is sending a command to a server on the other side of the world. Sometimes (very very seldomly) it fails.