Problem with Sen2COR plugin

I am getting this error whenever I am trying to use the Sen2COR .

Please if someone could help me out.

Did you successfully install the sen2cor?

More details of the module is available here,

http://step.esa.int/main/third-party-plugins-2/sen2cor/

you already opened a topic on this issue. Please stick to this one and have a bit of patience instead of just opening a new one. Unable to install Sen2COR