The probe shows shimmering daylight, even though Europa is five times as far removed from the sun as Earth, and in the movie the ice sheet is at least 2800m thick, both of which combined should result in darkness at that depth.
When the ship is falling back toward Europa in its failed escape attempt, the captain releases some radiation shielding to reduce the impact velocity. The mass of an object does not affect its rate of fall in a gravity field. Whether it weighed ten tons or one pound, it would hit the surface at the same velocity.
At the end of the movie the computer screen is titled "Katye spacewalk", but the screen is displaying Adobe Flash source code for colorpicker controls (import fl.events.colorpickerevent) in the three other windows where you'd expect the spaceship logfiles.