[Pw_forum] hello, I have a error message about Fermi surface by xcrysden ?

[r95222066 at ntu.edu.tw]

Dear all,
     I have a error message about Fermi surface by xcrysden

Here is my error message
-------------------------------------------------------------------------------
Number of atoms :0
Number of frames :0
Error: Error reading Band_Grid_3D_section,while reading
Error: Error reading the BXSF file
-------------------------------------------------------------------------------

Thanks a lot

                       Bing-Hong Chen,National Taiwan University,Taiwan