On some systems, the joystick plug-in will cause OpenSesame to freeze when using the psycho back-end. This appears to be due to an incompatibility between pygame, used for joystick support, and pyglet, used by PsychoPy.
Due to problems with PsychoPy and PyGlet 1.1.4, the addition of a psycho back-end has been postponed until things are fixed in these respective packages.
On some systems, the joystick plug-in will cause OpenSesame to freeze when using the psycho back-end. This appears to be due to an incompatibility between pygame, used for joystick support, and pyglet, used by PsychoPy.