Plaxis python tool failed to run

Hi guys,

I'm trying to open the scripting reference or python interpreter in Plaxis (both 2D and 3D). But I got error message 

and then my plaxis would just show 

 .

Any one could figure out what is it? I've used python scripting before with plaxis with other version of Plx and different laptop and had no problem. Does it have anything to do with the installation or? Thanks  a lot for help in advance!