You have noticed that when trying to switch language by pressing [A] icon it says "network error".
If you have language pack installed on previous version of WPS just go
/home/$USER/.kingsoft/office6/mui/
Copy the Code
Then make a copy of latest language pack directory (for me it is 10.1.0.5707).Then rename the copied directory as "10.1.0.6115"
If you have language pack installed on previous version of WPS just go