Not working on E7 Belle 111.030.0607. What I did:
1. Set screensaver to none.
2. Uninstall original version from Nokia Store.
4. Install version 3.0 from this thread.
6. Set screensaver to Nokia Sleeping Screen.
I have still original Nokia Sleeping Screen from Store.
when you say you have uninstalled from store, do you mean you have gone into menu, tools, settings, application settings, installed apps, Nokia sleeping screen, long press, uninstall?
That's really the only way to fully uninstall.