title: ns2 validate overall report: some tests failed
body: <p>I have installed my ns-2.35 on my ubuntu 12.10</p>
  
  <p>I got installation success info as below:</p>
  
  <pre><code>Ns-allinone package has been installed successfully.
  Here are the installation places:
  tcl8.5.10:  /opt/ns2/ns-allinone-2.35/{bin,include,lib}
  tk8.5.10:       /opt/ns2/ns-allinone-2.35/{bin,include,lib}
  otcl:       /opt/ns2/ns-allinone-2.35/otcl-1.14
  tclcl:      /opt/ns2/ns-allinone-2.35/tclcl-1.20
  ns:     /opt/ns2/ns-allinone-2.35/ns-2.35/ns
  nam:    /opt/ns2/ns-allinone-2.35/nam-1.15/nam
  xgraph: /opt/ns2/ns-allinone-2.35/xgraph-12.2
  gt-itm:   /opt/ns2/ns-allinone-2.35/itm, edriver, sgb2alt, sgb2ns, sgb2comns, sgb2hierns
  .
  .
  .
  </code></pre>
  
  <p>but when I executed the following command</p>
  
  <pre><code>sudo ./validate
  </code></pre>
  
  <p>There were error messages:</p>
  
  <pre><code>validate overall report: some tests failed:
   ./test-all-newreno ./test-all-tcpOptions ./test-all-tcpVariants ./test-all-aimd 
   ./test-all-frto ./test-all-quickstart ./test-all-manual-routing ./test-all-links
  to re-run a specific test, cd tcl/test; ./test-all-TEST-NAME
  </code></pre>
  
  <p>and then I re-installed my ns2 and executed that command again</p>
  
  <p>It showed even more failed tests:</p>
  
  <pre><code>validate overall report: some tests failed:
   ./test-all-newreno ./test-all-tcpOptions ./test-all-tcpVariants ./test-all-aimd 
   ./test-all-greis ./test-all-frto ./test-all-quickstart ./test-all-manual-routing 
   ./test-all-cbq ./test-all-intserv ./test-all-diffserv ./test-all-links 
   ./test-all-mpls ./test-all-satellite ./test-all-wpan ./test-all-srm ./test-all-plm
  to re-run a specific test, cd tcl/test; ./test-all-TEST-NAME
  </code></pre>
  
  <p>Can anyone give me a suggestion? How can I fixed this problem? Thanks in advance.</p>