Ok. Got it to run. Froze on enabling alarm (1+ min), killed it manually. Runs fine now, alarms enable ok. No more warning about the config file. Still can't read my wallpaper, o well.

Commented the following line in flipclock.py :
ci.device.set_device_state_callback(ci_eventHandle rs.deviceStateChangeEvent, system_inactivity=True, user_data=None)

Don't know what it does, but it crashes if I uncomment it.

Other than that, looks great, I'll play more with it late.