New Xperia S Email

Hi, I've installed miui 2.7.20 on my xperia s.
All is working well, but I've a big mistake with email client.
I've connected my mailserver (exchange) to the email client, I can receive new mail notification and I can see the object opening the email client (there aren't sync problems).
The problem occurs when i tap on the mail to open the body, at this moment the client crash.
Have someone the same problem?

Thanks
Davide

I've try to install the email.apk and exchange.apk from here http://miuiandroid.com/community/threads/request-exchange-security-disabled.16642/.
I've renamed the old email.apk and the old exchange.apk in the /system/app folder, rebooted, after that, I've copied inside the same folder the new ones and than I've rebooted.
Now email is working very well.

Davide