The NEWS of the randomForest R library mention that version 4.5-13 fixed a bug in predict.randomForest() when newdata is a matrix with no rownames. I think it corresponds to the difference in files predict.randomForest.R which is the new line if (is.null(rn)) rn <- keep As I've been using version 4.5-12 to make predictions for newdata with no row labels, could anyone tell me how this bug affected the predictions? Thanks, jaslqa [[alternative HTML version deleted]]