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28 Previous:&nbsp;<a rel="previous" accesskey="p" href="CMail-completion.html#CMail-completion">CMail completion</a>,
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32
33 <h3 class="section">10.6 Known CMail Problems</h3>
34
35 <p>It's possible that a strange conjunction of conditions may occasionally\r
36 mean that <samp><span class="file">cmail</span></samp> has trouble reactivating an existing\r
37 XBoard. If this should happen, simply trying it again should work.\r
38 If not, remove the file that stores the XBoard's PID\r
39 (<samp><span class="file">game.pid</span></samp>) or use the &lsquo;<samp><span class="samp">-xreuse</span></samp>&rsquo; option to force\r
40 <samp><span class="file">cmail</span></samp> to start a new XBoard.\r
41 \r
42 Versions of <samp><span class="file">cmail</span></samp> after 2.16 no longer understand the old file format\r
43 that XBoard used to use and so cannot be used to correspond with\r
44 anyone using an older version.\r
45 \r
46 Versions of <samp><span class="file">cmail</span></samp> older than 2.11 do not handle multi-game messages,\r
47 so multi-game correspondence is not possible with opponents using an older\r
48 version.\r
49 \r
50
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