Crash due to Swiftwolf's Rending gale

[NicholasArdens]

Title: Crash due to Swiftwolf's Rending gale

Version: 3.1.2

OS: Windows 7 64 Bit

Java Version: Version 7 Update 9

Description of Problem:

When you hold C with Swiftwolf's Rending Gale selected in your hotbar, and either wait a moment or right click to fire the wind blast, the client locks up and crashes, and does not generate an error log.

Error Messages:

Error Log:

[TheSavage0ne]

I have the same problem. whenever i press c to use the repulsive field it crashes. it is really anoying not being able to use the full abilities.