The mansion has a medical bay for treating the injured. It doesn't make sense for Beast's lab to be used.
Call it continuity or character error, or even voice acting direction, but early on, Jean refers to as Bolivar Trask pronouncing it as "Bolli-ver," rather than the correct "Bow-Livarr."
The reflection in Cyclops' glasses of the picture of the original Xmen line up is the wrong way round (it is not mirrored, as it should be).