When using 'destroy all' on the command line it crashes the game.  Not sure if its even a valid command with 'all' added to it.

I tried that command because 'destroy' was not working correctly.  As I mentioned in another post, the AI is very stupid.  Builds massive fleets of scouts or explorers, stacks them, then just sits there doing nothing.  While prolonging the game to work through the tech trees I attempt to keep the number of AI built ships to a minimum so it does not introduce any undesirable effects on the game due to the massive number of ships it can create.

When just using 'destroy' on a ship or fleet it gives every indication that it worked, but the target is still there.  Sometimes the hex looks empty afterwards but the ships are there when you put the cursor over the hex.  Sometimes I have to move to the next turn in order to get them to appear.

Frustrating...