Thank you very much for your feedback. Can some more of your confirm the problem with the mission, including your character name, class and server you are playing?
I am having the same problem. After the space port I travel to the next NPC, go through all the quest dialog and then the game just seems to"freeze" with the NPC looking at me and when it restarts I have just the quest text heading and nothing else.
I mistakenly dropped the quest on my way to turn it in after the final step and then I encountered the bug while attempting to redo it.