I've been running 7 on an iPad 2 since last night and so far have not had any trouble with the Messages app, which I've used quite a bit since the install. I did a restore as a new iPad after fn-alt restore and pointing to the ipw.
It opens, then it loads and then it crashesWhat do you mean it doesn't open? Does it crash or when you click it nothing happens?
If the app is crashing when you open it, then I had the same problem. All you have to do is go to settings and under the messages tab, disable iMessage. Then go back to the messages app and it should work fine after you give it your iCloud password.
It opens, then it loads and then it crashes
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Yeah. I've done that before to fix the problem. But it still crashes after.
Have you done a restore? Have you reset all settings? Have you rebooted the phone?
If the app is crashing when you open it, then I had the same problem. All you have to do is go to settings and under the messages tab, disable iMessage. Then go back to the messages app and it should work fine after you give it your iCloud password.