R-Multiple Linear Regression giving error while handling missing values for keep option

On selecting keep option in R-Multiple Linear Regression for handling missing values the following error came from R side

R-Multiple Linear Regression:An error occurred while executing commands in R environment

Details:

Cause:Error from R:"Error in lm.fit(x,y,offset=offset,singular.ok=singular.ok,..):

NA/Nan/Inf in 'X'