hey, thats the error message then im trying to use the IDL virtual machine to run the batch file for glas data, can anyone help me out with altering the file? if it helps, my batch config is below, thanks; ;; sample .ini file for idl use of batch_read_altimetry ;;--------------------------------- ---------------------- ;; lines with ; or # at the beginning are ignored. ;; Also note, don't use single or double quotes, neither will work ;; indir - required, location of input files, must end with '/' indir=Z:/NEW GLAS/ ;; output - optional, defaults to indir if not present, also must end with '/' outdir=Z:/NEW GLAS/ ;; infile - required: file or list of files (separated with ';') to process infile=GLA14_09100719_r5931_531_L2F;; outfile - required: file or list of files to write the output outfile=GLA14_09100719_r5931_531_L2F.out ;; prod_num - required: the GLA product number you are running. (06, 11, 12, 13, 14, or 15) prod_num=14;; release - required: the release number of the data. release=31 ;; Setting this flag to 1 will output the saturation range correction and gain ;; gain value used for received pulse to be appended to the end of each record. show_saturation_gain_corrections=0 ;; nrec - defaults to -1 which does the entire file. Each record has 40 ;;samples, invalid samples are not output. nrec=-1 ;; rec1 - defaults to 0 which is the first record in the file. rec1=0 ;; Show a pop-up notify message if this is 1 notify=0 ;; if you only want to output data from within a specific region, you can add ;; the subset keyword to this ini file where the lat and lon boundaries are ;; described in this order: [latmin, lonmin, latmax, lonmax] ;; Uncomment line below for subsetting ;; subset =[]