Inf missions keep crashing

I've been in 2 inf missions this week where the whole team LD'd at once around 80% of the mission, andthe whole mish reset, mobs respawned and we got no reward. The first was a hard which made it even worse. Also I have talked to two other people who have had the same thing happen in other inf missions this week. It's a bit of a pain when you've spent 45mins to an hour already in the mish.