IPhone 4 messaging app problem?

I have an iPhone 4 that I have had for about 8 months now and have never had this problem until today, my phone works perfectly fine except the messaging… When I tap on it, I get a blank screen then it takes me to home screen I've tried turning it off and turning it on again but it hasn't worked also my phone is up to date and is not jailbroken please help

Http://www.iphonehacks.com/2008/07/app-crash-fix.html

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