Game Freeze using Beta 1.1

< Hi I've had a weird lockup will playing. I hit the turn button after completing my moves and the game seems to get stuck in a loop will moving a freighter inbetween the turns. I can recreate this as i usually save the game before i end a turn. I had just invaded a planet if this makes a difference. If i cancel the offending trade route the turn passes normally . Any Ideas ?????? Don't know how to put debugger info on here but stardock you can have the save file if you want.