If what you say were true, then screencast would not operate on the phone regardless of what OS or custom ROM you had. As my initial question stated, the phone works fine with screencast with CyanogenMOD installed. I was just looking for a way to get the phone to work with screencast BEFORE installing a custom ROM.
Originally Posted by Ed Vim
Along with the rooted requirement, it states on the Google Play site that:
"This app is incompatible with your Sprint LGE LS670."
Just a guess but the older processor/shy on memory hardware of our Optimus S phones just don't have the resources to run Screencast.