Chat log error when people go on mounts.

Time: 8:08am EDT
Character: Chai Latte
Server: Hyperion
Party or Solo: solo
Class/Job: ACN 12

All locations, all the time.

This is completely repeatable. If I get on a mount, the text doesn't use my name and instead uses a random monster mob's name:

The puk hatchling mounts Legacy Chocobo.
The saltwater aurelia mounts Legacy Chocobo.
The big claw mounts Legacy Chocobo.
The wild jackal mounts Legacy Chocobo.
The megalocrab mounts Goobbue.

I've also had random players' names assigned instead of my own:

Zylia Valandrio mounts Goobbue.

This happened in phase 4 also.

-=-=-=-=-=-=- System Information -=-=-=-=-=-=-

SYSTEM_OS Windows 7 Ultimate 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130708-1532)
SYSTEM_CPU Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz (2 CPUs), ~2.1GHz
SYSTEM_CORE_NUM SYSTEM_CORE_LOGIC 2 SYSTEM_CORE_PHYSICS 2
SYSTEM_BIOS Phoenix - AwardBIOS v6.00PG
SYSTEM_LANGUAGE English (Regional Setting: English)
SYSTEM_MEMORY 4094.488MB
SYSTEM_VIRTUAL_MEMORY 2047.875MB
SYSTEM_PAGE_FILE 8187.160MB
SYSTEM_STORAGE C:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 238.375GB SYSTEM_FREEDISC_SPACE 164.735GB
SYSTEM_STORAGE D:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 931.511GB SYSTEM_FREEDISC_SPACE 707.254GB
SYSTEM_DIRECTX_VERSION DirectX 11
SYSTEM_GRAPHICS NVIDIA GeForce 8800 GT
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY1
SYSTEM_GRAPHICS_CHIP GeForce 8800 GT
SYSTEM_GRAPHICS_MAKER NVIDIA
SYSTEM_GRAPHICS_VRAM 495.563 MB
SYSTEM_GRAPHICS_SHARED_VRAM 1791.244 MB
SYSTEM_GRAPHICS_DAC Integrated RAMDAC
SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (60Hz)
SYSTEM_GRAPHICS_DRIVER nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
SYSTEM_GRAPHICS_DRIVER_VERSION 9.18.0013.1106
SYSTEM_GRAPHICS_DRIVER_DATE 2/26/2013 1:32:38 AM
SYSTEM_GRAPHICS_DRIVER_LANGUAGE English
3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_SOUND Speakers (Creative SB Audigy 4 (WDM))
SYSTEM_SOUND_DEVICE_ID {09FAFBBC-617C-4468-B185-9F638350C9E7}
SYSTEM_SOUND_DEVICE_NAME ctaud2k.sys
SYSTEM_SOUND_DRIVER_VERSION 6.00.0001.1377
SYSTEM_SOUND_DRIVER_LANGUAGE English
SYSTEM_SOUND_DRIVER_DATE 3/18/2010 8:50:52 PM
SYSTEM_SOUND SPDIF Out (Creative SB Audigy 4 (WDM))
SYSTEM_SOUND_DEVICE_ID {89AB5C7C-AF81-4FD3-92E5-6908A4C0C62E}
SYSTEM_SOUND_DEVICE_NAME ctaud2k.sys
SYSTEM_SOUND_DRIVER_VERSION 6.00.0001.1377
SYSTEM_SOUND_DRIVER_LANGUAGE English
SYSTEM_SOUND_DRIVER_DATE 3/18/2010 8:50:52 PM
SYSTEM_INPUT {6F1D2B60-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Mouse
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 3 SYSTEM_GAMEPAD_BUTTON 5 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6F1D2B61-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 128 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {CD637CD0-E3C4-11E1-8001444553540000}
SYSTEM_INPUT_NAME USB Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 1 SYSTEM_GAMEPAD_BUTTON 1 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {CD652A80-E3C4-11E1-8002444553540000}
SYSTEM_INPUT_NAME USB Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 3 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {CD652A80-E3C4-11E1-8003444553540000}
SYSTEM_INPUT_NAME USB Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 21 SYSTEM_GAMEPAD_FOV 0

PS, Gildrein, your link to "template" in the sticky is broken.