If you have ifile or another method of accessing your jailbroken iphone's file system, you can surf over to this directory:
/private/var/stash/Applications.hgYyCp/MobileSMS.app
I accidentally re-named the one I have to something it wasn't and didn't back them up and now my messages app has...
I know what to do, i just cant save the .plist file... Apparently windows doesn't recognize it as a file type. anything i could download to fix this?
Thanks
Wayde