[las_users] z variable confused as dimension?

Hi LAS group,

I'm getting the following error when attempting to access bathymetry datasets in LAS (v8.2):

**ERROR: dimensions improperly specified: 99999999 words were requested.
DEFINE SYMBOL dset0 = `Z,RETURN=dsetnum`
Command file, command group, or REPEAT execution aborted
ERROR RUNNING SCRIPT

I could be mistaken, but I believe these datasets worked in LAS v8.0. This only happens in a few of my bathymetry datasets where the ocean depth variable is named "z". There is not a z dimension in the NetCDF file, but it appears from the above error message that LAS is looking for a z dimension to be defined in my LAS dataset config file. Is that true?, and if so what is the workaround? I've copied and pasted an example config file below for the following dataset in our LAS, which pulls from a TDS hosted by NOAA/NGDC:

http://oos.soest.hawaii.edu/las/UI.vm?dsid=etopo1_bedrock&varid=z-etopo1_bedrock

Thanks,
John Maurer
Pacific Islands Ocean Observing System (PacIOOS)
University of Hawaii at Manoa

<datasets>
<etopo1_bedrock name="Bathymetry: ETOPO1 Global Surface Relief: Bedrock" url="" href="http://www.ngdc.noaa.gov/thredds/dodsC/relief/ETOPO1/thredds/ETOPO1_Bed_g_gmt4.nc">http://www.ngdc.noaa.gov/thredds/dodsC/relief/ETOPO1/thredds/ETOPO1_Bed_g_gmt4.nc">
    <variables>
      <z-etopo1_bedrock name="bathymetry and topography" units="meters" url="">        <link match="/lasdata/grids/grid-longitude-latitude-etopo1_bedrock" />
        
        <properties>
          <ferret>
            <fill_levels>30</fill_levels>
          </ferret>
        </properties>
      </z-etopo1_bedrock>
    </variables>
</etopo1_bedrock>
</datasets>
<grids>
<grid-longitude-latitude-etopo1_bedrock>
    <link match="/lasdata/axes/longitude-x-etopo1_bedrock" />
    <link match="/lasdata/axes/latitude-y-etopo1_bedrock" />
</grid-longitude-latitude-etopo1_bedrock>
</grids>
<axes>
<longitude-x-etopo1_bedrock type="x" units="degrees_east">
    <arange start="-180.0" size="21601" step="0.01666" />
</longitude-x-etopo1_bedrock>
<latitude-y-etopo1_bedrock type="y" units="degrees_north">
    <arange start="-90.0" size="10801" step="0.01666" />
</latitude-y-etopo1_bedrock>
</axes>