Hello xy-p mailing list!<br><br>Recently I have installed the xy-pic package on a pc with f12. The compilation of the following code doesnt show the pdf from the author. Specifically the mistake is in names &quot;a_1&quot;,...&quot;b_5&quot; and its edges &quot;a1&quot;-&quot;a3&quot;, because if i coment the name and edge assignations, the compilation works.<br>

<br>\[ \fbox{ \xygraph{<br>!{&lt;0cm,0cm&gt;;&lt;0cm,1cm&gt;:&lt;-1cm,0cm&gt;::}<br>!{(0,0);a(0)**{}?(1.0)}*{\bullet}=&quot;a1&quot;<br>!{(0,0);a(72)**{}?(1.0)}*{\bullet}=&quot;a2&quot;<br>!{(0,0);a(144)**{}?(1.0)}*{\bullet}=&quot;a3&quot;<br>

!{(0,0);a(216)**{}?(1.0)}*{\bullet}=&quot;a4&quot;<br>!{(0,0);a(288)**{}?(1.0)}*{\bullet}=&quot;a5&quot;<br>!{(0,0);a(0)**{}?(1.8)}*{\bullet}=&quot;b1&quot;<br>!{(0,0);a(72)**{}?(1.8)}*{\bullet}=&quot;b2&quot;<br>!{(0,0);a(144)**{}?(1.8)}*{\bullet}=&quot;b3&quot;<br>

!{(0,0);a(216)**{}?(1.8)}*{\bullet}=&quot;b4&quot;<br>!{(0,0);a(288)**{}?(1.8)}*{\bullet}=&quot;b5&quot;<br>&quot;a1&quot;-&quot;a3&quot; &quot;a3&quot;-&quot;a5&quot; &quot;a5&quot;-&quot;a2&quot; &quot;a2&quot;-&quot;a4&quot; &quot;a4&quot;-&quot;a1&quot;<br>

&quot;b1&quot;-&quot;b2&quot; &quot;b2&quot;-&quot;b3&quot; &quot;b3&quot;-&quot;b4&quot; &quot;b4&quot;-&quot;b5&quot; &quot;b5&quot;-&quot;b1&quot;<br>&quot;a1&quot;-&quot;b1&quot; &quot;a2&quot;-&quot;b2&quot; &quot;a3&quot;-&quot;b3&quot; &quot;a4&quot;-&quot;b4&quot; &quot;a5&quot;-&quot;b5&quot;<br>

 } } \]<br><br>some from the .bug file :<br><br>! Use of \next@ doesn&#39;t match its definition.<br>&lt;argument&gt; ....2cm&gt;::} !{(0,0) }*+{\bullet _{a}}=&quot;<br>                                                  a&quot; !{(1,1) }*+{\bullet _{b...<br>

<br><br><br>If anybody have any suggestion, its good. <br>Many thanks in advance.<br>Felipe.<br>