Question: Problem -- Matrix solution

<p><span><a href="http://mapleoracles.maplesoft.com:8080/maplenet/primes/worksheet/2031_29.mw">View 2031_29.mw on MapleNet</a> or <a href="http://beta.mapleprimes.com/files/2031_29.mw">Download 2031_29.mw</a><br />
<a href="http://beta.mapleprimes.com/viewfile/2575">View file details</a></span><span><a href="http://mapleoracles.maplesoft.com:8080/maplenet/primes/worksheet/2031_27.mw">View 2031_27.mw on MapleNet</a> or <a href="http://beta.mapleprimes.com/files/2031_27.mw">Download 2031_27.mw</a><br />
<a href="http://beta.mapleprimes.com/viewfile/2576">View file details</a></span><span><a href="http://beta.mapleprimes.com/files/2031_24.mws">Download 2031_24.mws</a><br />
<a href="http://beta.mapleprimes.com/viewfile/2577">View file details</a></span></p>
<p>I have uploaded three files. They all do the same thing with slightly different datasets. files 29 and 27 obtain rasonable solutions, but 24 does not.</p>
<p>Could you help me figure out what the problem is and how such problems can be identified -- so that I can make the necessary changes to them.</p>
<p>I have the same problem with other datasets.</p>
<p>Thanks.</p>
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