Plot hole: When the Liberator returns to the planet, Travis remarks that their orbit is too far away to use their matter transmitter. Since Travis had only found out that they even HAD a matter transmitter (which the Federation hasn't managed to develop yet) when he spoke to a technician just before that, how would he know what the range was? (00:43:50)
Revealing mistake: When the Federation troopers blow open the interrogation room door, you can see a brief glimpse, through the smoke, of the thrown sledge hammer that was used to make the door fall in. (00:48:15)