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    The most reasonable thing is that there is a typo in your .mdp or in
    your .top files.<br>
    Check where you've written "Ptotein" instead of Protein<br>
    <br>
    <br>
    On 11/25/11 4:09 PM, yp sun wrote:
    <blockquote
      cite="mid:1322208567.91302.YahooMailClassic@web15601.mail.cnb.yahoo.com"
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              <div>Dear Sir'</div>
              <div>&nbsp;</div>
              <div>When I ran the grompp as following</div>
              <div>&nbsp;</div>
              <div>grompp -v -f md.mdp -c pr.gro -p RI-10.top -o md.tpr</div>
              <div>&nbsp;</div>
              <div>a error information appeared: </div>
              <div>&nbsp;</div>
              <div><br>
                &nbsp;</div>
              <div>Program grompp, VERSION 3.3.1<br>
                Source code file: readir.c, line: 789</div>
              <div>Fatal error:<br>
                <font style="BACKGROUND-COLOR: #ffff00">Group Ptotein</font>
                not found in indexfile<br>
                Maybe you have non-default goups in your mdp file, while
                not using the '-n' opti on of grompp.<br>
                In that case use the '-n' option</div>
              <div>&nbsp;</div>
              <div>I don't know which file&nbsp;"<font
                  style="BACKGROUND-COLOR: #ffff00">Group Ptotein</font><font
                  style="BACKGROUND-COLOR: #ffffff">" </font><font
                  style="BACKGROUND-COLOR: #ffffff">is in and where I
                  should make change.</font></div>
              <div>&nbsp;</div>
              <div><font style="BACKGROUND-COLOR: #ffffff">Can you help
                  me? Thanks in advance.</font></div>
              <div><br>
                Yeping Sun<br>
                CAS Key Laboratory of Pathogenic Microbiology &amp;
                Immunology<br>
                INSTITUTE OF MICROBIOLOGY CHINESE ACADEMY OF SCIENCES <br>
                NO.1 Beichen West Road,Chaoyang District,Beijing
                100101,china</div>
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    <br>
    <br>
    <pre class="moz-signature" cols="72">-- 
Gianluca Santoni,
Institut de Biologie Structurale
41 rue Horowitz
Grenoble
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