Dear guys, I am loggng in another country's machine to deal with some astronomy data. However, offten meet some segmentation fault. Following is a example. What is wrong with it? Thanks in advance!   Sun   3dp> load_3dp_data Using decomutator: "/disks/socware/idl/missions/wind/3dp/idl/wind3dp_lib_sunos_sparc.so" Wind Data Extraction Library. (compiled: 11:27:42  Apr 18 2002) Using /home/wind/index/wi_lz_3dp_files as the data source. Loading file /home/wind/dat/wi/3dp/lz/2000/wi_lz_3dp_20000218_v01.dat... File incompletely loaded. Done with file input. Reference date is: 2000-02-18 3dp> tr=['00-02-18/09:00:00','00-02-18/12:00:00'] 3dp> dat=get_sf(tr) 3dp> info=plotpad('get_sf',tr,2,bins=2,interp=1) Environment variable: WI_K0_MFI_FILES Found. CDF_FILE_NAMES:            1 of         5217 Files found in      0.065688848 seconds Loading /home/wind/dat/wi/mfi/k0/2000/wi_k0_mfi_20000218_v01.cdf 1/1: $MAIN$(0): PLOTPAD(52): LOAD_WI_MFI(66): STORE_DATA(155): Altering tplot variable: 1 wi_B 1/1: $MAIN$(0): PLOTPAD(52): LOAD_WI_MFI(68): STORE_DATA(155): Altering tplot variable: 2 wi_B_rms        2          873  SST Foil time samples          873 % Program caused arithmetic error: Floating illegal operand 3dp> padcolorplot,info % Compiled module: PADCOLORPLOT. % Compiled module: WI. % Compiled module: OPTIONS. % Compiled module: SPECPLOT. % Compiled module: BOX. % Compiled module: PLOT_POSITIONS. % Compiled module: STRUCT_VALUE. % Compiled module: INTERP. % Compiled module: BYTESCALE. Segmentation fault                   sundry-~/wind [48]