<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><meta http-equiv="content-type" content="text/html; charset=utf-8"><div>dear users</div><div><br></div><div>when i try to run the example 20, i found this :</div><div><br></div><div>/espresso-4.0.5/examples/example20> ./run_example</div><div><br></div><div><span class="Apple-style-span" style="font-family: monospace; font-size: medium; white-space: pre; ">usr/local</span>/espresso-4.0.5/examples/example20 : starting</div><div><br></div><div>This example shows how to use cp.x to perform molecular dynamics</div><div>simulation of NH3.</div><div><br></div><div>  executables directory: /<span class="Apple-style-span" style="font-family: monospace; font-size: medium; white-space: pre; ">usr/local</span>/espresso-4.0.5/bin</div><div>  pseudo directory:      /<span class="Apple-style-span" style="font-family: monospace; font-size:
 medium; white-space: pre; ">usr/local</span>/espresso-4.0.5/pseudo</div><div>  temporary directory:   /<span class="Apple-style-span" style="font-family: monospace; font-size: medium; white-space: pre; ">usr/local</span>/tmp</div><div>  checking that needed directories and files exist...</div><div>ERROR: /<span class="Apple-style-span" style="font-family: monospace; font-size: medium; white-space: pre; ">usr/local</span>/espresso-4.0.5/bin/cp.x not existent or not executable</div><div>Aborting</div><div><br></div><div>what is the probleme</div><div><br></div><div><br></div></td></tr></table><br>