When Kalgan is torturing Lea Jansen, he says that he wants her father's countermeasures. But when she is rescued and finds out MacPhearson is working for Kalgan, Capt. Devers is worried because MacPhearson knows all of the ship's countermeasures. If MacPhearson knows the countermeasures, then Kalgan does too, so there is no reason to bring it up while he is torturing Lea.
When Steve Godel (?) is thrown off the railings by Kalgan and hits the ground, his glasses fall off. There's a cut to Kalgan laughing, and in the very next cut, with the papers falling on him, his glasses are back on.
When Lea Jansen tricks the guard into removing his jumpsuit, she presses a high heeled boot against his stomach. When she escapes and is shown running up a ladder a few seconds later, the high-heeled boots have changed into stylish flat boots that clearly could not have come from the guard.
In interior shots of the spaceship "Southern Sun", large, hinged, factory-type windows can be clearly seen (not to mention the fact that sunlight is clearly coming through them in several scenes) and much of the Southern Sun is made of brick and mortar.