Mms.apk not installing.

[G8GT594]

So i messed up and deleted Mms.apk in the system/app folder. I redownloaded one for droid X only one i could find unless someone else has the apk file.

The issue. It won't install. It just says this application is not installed when i try to install it using root explorer. Even tried Data/cache wipe. Still won't install.

Any ideas please!!!!!

thanks you!