If Morphine.TV fails to start and you get the following output:

(!) DirectFB/core/vt: Error opening `/dev/tty0'!
    --> Permission denied
(!) DirectFB/Core: Could not initialize 'system_core' core!
    --> Initialization error!

your user doesn't have read access to /dev/tty0.

A simple

sudo chmod a+r /dev/tty0

fixes this problem.