It has been confirmed that when Mathlab v6.x is installed in a user’s system, PollEx and all other OpenGL programs are blocked from being executed.

 

In this case, go to 'Control Panel' -> 'Administraitive Tools' -> 'Service'

and set ‘MATLAB Server’ to ‘Stop’ or ‘Pause’.

This problem has been solved in the Mathlab v7.x version.