Do you have MMS on your phone or.... VideoRecorder3G app?I downloaded it (before reading your post) and all is working fine, camera works as normal when i touch the screen blue box appears to select the area to focus (although i can't really see any difference!).
It must be conflicting with something else you have downloaded maybe.
They said the issue was a conflict with Battery % or something like that. Any app that edits the plist file. So remove both apps that conflict with each other and then re install which one you want to use.I'm not 100% sure what you mean by "both". One being the camera mod, the other being ? I've got little knowledge on the workings of all this. hah