(me3) unable to load / crashing when loading n7: fuel reactors quest

Hey guys wondering if you can help,

I just finished doing the rannoch questline and im trying to finish up this part of the game before returning to the citadel by doing the quest n7: fuel reactors; However, the game crashes to the launcher or just never loads and gets stuck on the loading screen which caused me to restart my computer a couple of times. Anyone know if this is a known bug and/or is currently encountering this problem?

thanks guys in advance.