My buddy and I just hit 34 today and decided it was time to run the level 35 Prison of Elders. We find another 34 and jump in. Things are going rather smoothly as we progress through the rounds, not wiping even once. When we finally get to Skolas, we start having some troubles. Expectedly, he's a very difficult boss and it takes us many tries to try to get a rhythm going. When we finally figure things out and start getting stuff done, guess what happens... Error Code I get sent back to orbit and they're down a man. No big deal, they just send me an invite and I jump right back in, right? Wrong. I am "unable to join, as the activity is almost finished". No shit, I was right there about to finish it. Now it won't let me back in. So now, we're all screwed out of loot after putting hours into this challenge. I know that people shouldn't be able to join at the last boss to collect on stuff they didn't work for, but come on. SOMETHING needs to be done to allow people who get disconnected a chance to get back in. So we all quit for the day, feeling demoralized after watching all our efforts be for nothing. Error codes should not be a reason for failing the most difficult challenge in the game right now.