Main Scenario Quest Issue: "Breaking into Hives"

**Please note: I play in Windowed.**
Screenshots: http://i.imgur.com/7CYoKEL.png -- http://i.imgur.com/S4u3Mzx.png

Time: 8:38 PM (EST)
Frequency: Just once- not sure if able to recreate (story line quest)
World name: Hyperion
Character name: Haruko Haruhara
NPC name: N/A - (I didn't catch it)
Monster name: N/A - Marching Steeldrone & Marching Firedrone
Class/Level: BRD, 53
Party or solo: Party
In-game time: N/A
Area and coordinates: Dravania - The Dravanian Forelands > The Smoldering Wastes. (X:26, Y:33)
Steps:
1. Approach purple circle outlined for quest with party member at (X:26, Y:33) as stated above.
2. I selected the NPC that was in the middle of the purple circle as my party member began attacking the enemy spawns right away.
3. NPC disappears, but the green arrow above where NPC was located in the middle of purple circle is still there.
4. For some reason, as this green arrow is still there, I am unable to do anything. I am unable to jump, perform actions, or move. I am completely stuck. I also cannot open the game menu via the ESC key.
5. I can however, open up the regular game menus located on the bottom right hand side of the screen, move my cursor, and type in /say, /fc, /shout, /party, etc.
6. Closed game via red x at the top right hand corner (Windows) as I was unable to do so from the game - "can't log out while occupied".

Connection Specs
- Type of internet connection/provider: Cable - Time Warner Cable
- Modem maker/model number: N/A

PC Specs
-=-=-=-=- System Information -=-=-=-=-
Time of this report: 6/21/2015, 20:55:05
Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7600) (7600.win7_gdr.120830-0334)
Language: English (Regional Setting: English)
Processor: Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz (4 CPUs), ~3.4GHz
Memory: 16384MB RAM
Available OS Memory: 16340MB RAM
Page File: 6480MB used, 26195MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11

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Laptop Model Name: N/A
Laptop Model Number: N/A

Gamepad Manufacturer: N/A
Gamepad Model Name: N/A
Gamepad Part Number: N/A

Browser Information
- Name and version of the browser currently in-use: Google Chrome - Version 44.0.2403.52 beta-m
- Internet Explorer Version: N/A