<p>
        Dear developers,<br />
        <br />
        I met a error message when i used xspectra code, which is<br />
        <br />
         </p>
<p>
        %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br />
             from  fft_dlay_set  : error #         2<br />
              wrong fft dimensions<br />
         %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%</p>
<p>
        <br />
         I knew it from the reason of nr1<nr1x ... However, there is no error when i changed to use the version of 4.2.1. So, could you tell me what's the problem? Or is it a bug in the new version?<br />
        <br />
        Best regards.<br />
        <br />
        Jiayu</p>