ISP:
MNC Playmedia

Type of Internet Connection:
Optic Fiber

Internet Connection Speed:
10 Mbps

Date & Time:
8 June 2016 7:00 AM PST

Frequency:
Always

World:
Balmung

Character Name:
Sigurd Brandrson

Retainer Name:
None

NPC Name:
Aubrenard

Monster Name:
None

Class/Level:
LTW/55

Party or Solo:
Solo

Race:
Lalafell M

In-Game Time:
Morning/Midday/Night

Area and Coordinates:
Forgotten Knight

Housing:
None

Steps:

Doing the Level 55 LTW Quest "Perfect Pitch."
I was told to make HQ Dhalmelskin Leggings of Scouting by Eide.
After making it myself and giving it to Eide, I was given key item "Complimentary Boots" and told to give it to Aubrenard.
After talking to Aubrenard, I give the key item to him, and he commented as if the quest is going to continue, then the screen fades to black with a loading symbol as if a cutscene's going to start.
But the quest doesn't continue, and I'm stuck at this step. Talking to Aubrenard again restarts the same dialogue and option to gives him the key item.
I tried to give it from various positions, at various times, after logging out and in again, but it never continues.