title: Sencha Cmd build - Failed creating background process
body: <p>I'm trying to build extjs5 application with Cmd v5.0.0.160.</p>
  
  <p>I have ruby2.0 installed and sencha cmd on my PATH var.</p>
  
  <p>Here is the error that I get when running <code>sencha app build</code>:</p>
  
  <pre><code>...
  [INF] Capturing theme image
  [ERR] 
  [ERR] BUILD FAILED
  [ERR] com.sencha.exceptions.ExProcess: Failed creating background process
  [ERR]   at com.sencha.command.plugin.PluginManager.executeRe
  [ERR] verseFirst(PluginManager.java:134)
  [ERR] 
  [ERR] Total time: 9 seconds
  [ERR] The following error occurred while executing this line:
  /local/dev/PROJECTS2/loc-ext/loc-ext/.sencha/app/build-impl.xml:326: The following error occurred while executing this line:
  /local/dev/PROJECTS2/loc-ext/loc-ext/.sencha/app/slice-impl.xml:239: The following error occurred while executing this line:
  /local/dev/PROJECTS2/loc-ext/loc-ext/.sencha/app/slice-impl.xml:240: The following error occurred while executing this line:
  /local/dev/PROJECTS2/loc-ext/loc-ext/.sencha/app/slice-impl.xml:111: com.sencha.exceptions.ExProcess: Failed creating background process
  </code></pre>
  
  <p>The application is working OK in development mode (sencha app watch). </p>
  
  <p>Since it looks like it's about themes, I'm not using custom theme but ext-theme-neptune.</p>
  
  <p>Does anybody have a clue what is it about? 
  I will appreciate any idea!</p>
  
  <p><strong>Solution:</strong></p>
  
  <p>The debug mode showed that the problem was in missing directory <code>Cmd/5.0.0.160/bin/linux-x64</code>. However there was <code>Cmd/5.0.0.160/bin/linux</code> dir, therefor soft-linking <code>linux</code> to <code>linux-x64</code> fixed the issue.</p>