No idea, broseph. Sometimes PSO just crashes. The client is poorly coded. All I can say is try the quest again. It's not our server crashing you.
To be honest, I'm not advanced enough to patch any problems with the actual quest file, if it has an issue that would cause that. These are just dumps of the quest from SEGA too, and I've passed that quest on my characters already, so I know it is passable.