Kicking players for too long messages

[JohnPark234]

Currently testing out in a new modpack which include:
Damage Indicators
BackTools
Extra Bees and Trees
Buildcraft
ChatBubbles
GunsCustom
Flat Bedrock
Forestry
ICBM
Immibis Core & Microblocks
Inventory Tweaks
Iron Chests
Mekanism
MFFS 3.0 (Calclavia Version)
MineChem 3
Mine Factory Reloaded
NEI (and Addons)
OmniTools
Thermal Expansion
Universal Electricity
Railcraft
RedLogic
Rei's Minimap
TukMC GUI

Also using mcpc+ 643 and essentials plugins (Anti-build, Chat, etc) server-side

It seems like when a player tries to chat with more than one line of message its kicks the player and leaves this behind:

2013-09-11 05:29:14 [WARNING] lllJPlll tried to send an empty message
2013-09-11 05:29:14 [INFO] Unloading Player: lllJPlll

and disconnected with this message:
http://accretion.us/reference/tabbychatkicked.png

Personally love how more than one line can be inputted and outputted in different lines, it would be awesome of you if you could help me solve this little problem :D