Help The application settings (process com.android.settings) has stopped unexpectedly. please try again

[pierrette]

Help.......I have a viewsonic viewpad 7. When I try connect to wi-fi and I get the error saying The application settings (process com.android.settings) has stopped unexpectedly. please try again. I checkek in application seetings in the android system i have a o.oo mb I wonder if my niece erase the application. Is there a way I can download the OS again. Thanks everyone