I am creating a predictive model. I am trying to transform the data distribution of some raster variables so that it approximates a normal distribution before calculating the z-scores to use as input variables for principal component analysis. I am trying to use the geostatistical analyst wizard to normalize the data but each time I run the tool and get to step three I get an error message that says there is not enough memory. I ran the tool once before without any problems but now after each go ArcMap shuts down.