ERROR 1: Output dataset nm3326710859220120509/WWBC_BurnSeverity_From0605BARC_0618BARC_20120627.shp.standardized.usgs_lcc.tif_reveg/landfire_disturbance_2009.tif exists,
but some command line options were provided indicating a new dataset
should be created.  Please delete existing dataset and run again.