title: error in downloading using ascp
body: <p>I am trying to downloading some file using this command:</p>
  
  <p>using both SRA toolkit and Aspera Connect</p>
  
  <pre><code>~/source/sratoolkit.2.3.5-2-ubuntu64/bin/prefetch -t ascp -a "~/.aspera/connect/bin/ascp|~/.aspera/connect/etc/asperaweb_id_dsa.openssh" SRR1287825
  </code></pre>
  
  <p>but It gives me this error </p>
  
  <pre><code>1) Downloading 'SRR1287825'...
  Downloading via fasp...
  err: process failed while waiting process - ascp failed with 1
  fasp download failed
  1) failed to download SRR1287825
  </code></pre>
  
  <p>what is the meaning of error 1 , and what shall I do?</p>
  
  <p>thanks in advance.</p>