I still have problem when using MCTK to batchly process mod10A2 modis data,the pro file is following: pro test_batch_modis_conversion_grid compile_opt idl2 FilePath = 'f:\MOD10A2input\' FileSearch = FILE_SEARCH(FilePath, COUNT = ProductCount, 'MOD10*.HDF', /TEST_READ, /FULLY_QUALIFY_PATH) IF(ProductCount LE 0) THEN BEGIN Print, 'There is no MODIS MOD10 to be processed.' RETURN ENDIF FOR i=0, ProductCount-1 DO BEGIN File = FileSearch[i] Filename = FILE_BASENAME(File) A = STRPOS(FILENAME,'.') output_rootname = STRMID(FILENAME,A+1,15) ;The specified output location MUST end in the appropriate path ;separator for your OS output_location = 'f:\modoutput\' ;output_rootname = Filename grid_name = 'MOD_Grid_Snow_500m' sd_names = ['Eight_Day_Snow_Cover'] ;Output method schema is: ;0 = Standard, 1 = Reprojected, 2 = Standard and reprojected out_method = 1 output_projection = envi_proj_create(/geographic) ;Specify the output X and Y pixel sizes in double precision floating ;point. Sizes must be in units relevant to selected output projection ;(degrees in this example). out_ps_x = 0.004180d out_ps_y = 0.004180d ;The interp_method keyword uses the same numbering scheme as ;ENVI_REGISTER_DOIT's METHOD keyword ;Choosing Triangulation with Nearest Neighbor. interpolation_method = 6 ;Set reprojection background and any native fill values to -999 ;Setting num_x_pts to 50 and num_y_pts to 50 results in 2500 GCPs. ;That should be more than enough.... convert_modis_data, in_file=File, $ out_path=output_location, out_root=output_rootname, $ /higher_product, /grid, gd_name=grid_name, sd_names=sd_names, $ out_method=out_method, out_proj=output_projection, $ out_ps_x=out_ps_x, out_ps_y=out_ps_y, num_x_pts=50, $ num_y_pts=50, interp_method=interpolation_method, $ background=-999, fill_replace_value=-999, $ r_fid_array=r_fid_array, r_fname_array=r_fname_array endfor end the error is intermittent showed as: Any response is appreciated