The fumes given off from the hatch at the start are white, yet fluorine gas is yellow.
(at around 13 mins) Geordi walks into a room of dead people. As the camera is walked backwards, you can see a 'dead' person pulling a barrel over to support herself. It must have slipped and the film crew thought it was off-camera.
Geordi uses an interface suit to manipulate a remote probe. In scenes from the probe's point-of-view, Geordi is depicted as if he were actually in the remote location, but his reflection is that of the probe. However, he casts a human shadow, not a probe-shaped shadow.
Geordi (or rather, the probe under Geordi's control) is unable to lift a metal beam off a pinned crew member on the USS Raman and must request that Data boost power to the probe's tractor beam in order to lift it. Once the metal beam has been moved from the crewman's chest, Geordi checks the man's vitals by touching his neck and confirms that he is dead. There was nothing about the beam's initial placement that prohibited Geordi or the probe from checking the man's vitals. Boosting power to the tractor beam and moving the beam was an unnecessary waste of time and resources. Between the Enterprise's chief engineer, chief medical officer, and super-human android second officer, they should have been able to work out a more efficient order of operations.
At about 35 minutes, just after Geordi asks Data to increase the probe's connective power, there is a very obvious boom shadow within a square of reflected light, directly behind Geordi's Mom.