Quest "Getting Even with Garlemald" unable to complete

[ChainedMouse]

Time: all day, various times
Frequency: Every time I try to click on the drainage pipe
World name: Leviathan
Character name: Lorimer Grayson
NPC name: Drainage Pipe
Monster name: n/a
Class/Level: Arcanist (summoner)/46
Party or solo: Solo and party both attempted
In-game time: Don't remember
Area and coordinates: Mor Dhona X:13/Y:14
Steps:
1. Start story quest "Getting Even with Garlemald" and continue until drainage pipe infiltration part.
2. Go to drainage pipe
3. Click drainage pipe
4. Kill chigoes after they spawn
5. Drainage pipe is still sparkly. Click it again. Nothing happens. Ever.

[K-Money]

Time: First encountered around 9:30pm PST
Frequency: Every time I try to click on the drainage pipe
World name: Leviathan
Character name: Arthur King
NPC name: Drainage Pipe
Monster name: Drainage Pipe?
Class/Level: Gladiator(Paladin) 44
Party or solo: Solo
Area and coordinates:Mor Dhona 13/14
Steps:
1. Start story quest "Getting Even with Garlemald" and continue until drainage pipe infiltration part
2. Go to drainage pipe
3. Click drainage pipe
4. Kill chigoes after they spawn
5. Drainage pipe is still sparkly. Click it again. Nothing happens. Ever.

Connection Specs
- Type of internet connection/provider: dsl/Consolidated Smart Systems
- Modem maker/model number: no clue, but N/A