[las_users] File parsed. No Lat/Lon grids found

[Team sviluppo ECA <ecadevel@xxxxxxxxx>]

Dear all,
we are having problems adding files to our LAS 6.5.1.2 installation. 
Using the addXML.sh tool we receive the following error:

"File parsed.  No Lat/Lon grids found."

we have tried to use the suggestions we have found in other threads 
about the "positive" attribute value. Unluckily this didn't seem to have 
effects.
Can anybody help us?

This is the dump of one of our file:

> ncdump -h 030525_T.nc
netcdf 030525_T {
dimensions:
       deptht = 72 ;
       y = 253 ;
       x = 677 ;
       time_counter = UNLIMITED ; // (1 currently)
variables:
       float deptht(deptht) ;
               deptht:units = "m" ;
               deptht:positive = "down" ;
               deptht:valid_min = 1.472102f ;
               deptht:valid_max = 5334.648f ;
               deptht:title = "deptht" ;
               deptht:long_name = "Vertical T levels" ;
               deptht:short_name = "depth" ;
       float nav_lat(y, x) ;
               nav_lat:units = "degrees_north" ;
               nav_lat:valid_min = 30.25f ;
               nav_lat:valid_max = 46.f ;
               nav_lat:long_name = "latitude" ;
               nav_lat:nav_model = "Default grid" ;
               nav_lat:short_name = "lat" ;
       float nav_lon(y, x) ;
               nav_lon:units = "degrees_east" ;
               nav_lon:valid_min = "-6.000f" ;
               nav_lon:valid_max = 36.25f ;
               nav_lon:long_name = "longitude" ;
               nav_lon:nav_model = "Default grid" ;
               nav_lon:short_name = "lon" ;
       float sohefldo(time_counter, y, x) ;
               sohefldo:units = "W/m2" ;
               sohefldo:missing_value = 1.e+20f ;
               sohefldo:valid_min = 1.e+20f ;
               sohefldo:valid_max = -1.e+20f ;
               sohefldo:long_name = "Net Downward Heat Flux" ;
               sohefldo:short_name = "sohefldo" ;
               sohefldo:online_operation = "ave(only(x))" ;
               sohefldo:axis = "TYX" ;
               sohefldo:interval_operation = 600.f ;
               sohefldo:interval_write = 86400.f ;
               sohefldo:associate = "time_counter nav_lat nav_lon" ;
       float soshfldo(time_counter, y, x) ;
               soshfldo:units = "W/m2" ;
               soshfldo:missing_value = 1.e+20f ;
               soshfldo:valid_min = 1.e+20f ;
               soshfldo:valid_max = -1.e+20f ;
               soshfldo:long_name = "Shortwave Radiation" ;
               soshfldo:short_name = "soshfldo" ;
               soshfldo:online_operation = "ave(only(x))" ;
               soshfldo:axis = "TYX" ;
               soshfldo:interval_operation = 600.f ;
               soshfldo:interval_write = 86400.f ;
               soshfldo:associate = "time_counter nav_lat nav_lon" ;
       float sossheig(time_counter, y, x) ;
               sossheig:units = "M" ;
               sossheig:missing_value = 1.e+20f ;
               sossheig:valid_min = 1.e+20f ;
               sossheig:valid_max = -1.e+20f ;
               sossheig:long_name = "Sea Surface Height" ;
               sossheig:short_name = "sossheig" ;
               sossheig:online_operation = "ave(only(x))" ;
               sossheig:axis = "TYX" ;
               sossheig:interval_operation = 600.f ;
               sossheig:interval_write = 86400.f ;
               sossheig:associate = "time_counter nav_lat nav_lon" ;
       float sowaflup(time_counter, y, x) ;
               sowaflup:units = "Kg/m2/S" ;
               sowaflup:missing_value = 1.e+20f ;
               sowaflup:valid_min = 1.e+20f ;
               sowaflup:valid_max = -1.e+20f ;
               sowaflup:long_name = "Net Upward Water Flux" ;
               sowaflup:short_name = "sowaflup" ;
               sowaflup:online_operation = "ave(only(x))" ;
               sowaflup:axis = "TYX" ;
               sowaflup:interval_operation = 600.f ;
               sowaflup:interval_write = 86400.f ;
              sowaflup:associate = "time_counter nav_lat nav_lon" ;
       float time_counter(time_counter) ;
               time_counter:units = "seconds since 0003-05-24 00:00:00" ;
               time_counter:calendar = "gregorian" ;
               time_counter:title = "Time" ;
               time_counter:long_name = "Time axis" ;
               time_counter:time_origin = " 0003-MAY-24 00:00:00" ;
       float vosaline(time_counter, deptht, y, x) ;
               vosaline:units = "PSU" ;
               vosaline:missing_value = 1.e+20f ;
               vosaline:valid_min = 1.e+20f ;
               vosaline:valid_max = -1.e+20f ;
               vosaline:long_name = "Salinity" ;
               vosaline:short_name = "vosaline" ;
               vosaline:online_operation = "ave(only(x))" ;
               vosaline:axis = "TZYX" ;
               vosaline:interval_operation = 600.f ;
               vosaline:interval_write = 86400.f ;
               vosaline:associate = "time_counter deptht nav_lat nav_lon" ;
       float votemper(time_counter, deptht, y, x) ;
               votemper:units = "C" ;
               votemper:missing_value = 1.e+20f ;
               votemper:valid_min = 1.e+20f ;
               votemper:valid_max = -1.e+20f ;
               votemper:long_name = "Pot. Temper" ;
               votemper:short_name = "votemper" ;
               votemper:online_operation = "ave(only(x))" ;
               votemper:axis = "TZYX" ;
               votemper:interval_operation = 600.f ;
               votemper:interval_write = 86400.f ;
               votemper:associate = "time_counter deptht nav_lat nav_lon" ;

// global attributes:
               :Conventions = "GDT 1.3" ;
               :file_name = "MF_1d_030524_030531_grid_T.nc" ;
               :production = "An IPSL model" ;
               :TimeStamp = "2005-MAY-13 05:34:13 GMT-0200" ;
               :associate_file = "MF_1d_030524_030531_grid_T.nc 
MF_1d_030524_030531_grid_U.nc MF_1d_030524_030531_grid_V.nc" ;
               :history = "[cut]" ;