title: Install Script is not running in my magento module?
body: <p>I am developing a magento module in which i am trying to install a table in database throught my script but for some reasons i am unable to run this install script. </p>
  
  <p>Here's my <code>config.xml</code> code : </p>
  
  <pre><code>&lt;?xml version="1.0"?&gt;
  &lt;config&gt;
  &lt;!-- turn on our module, required for install support --&gt;
  &lt;modules&gt;
  &lt;Gwb_Magecrmsync&gt;
      &lt;version&gt;0.1.0&lt;/version&gt;
  &lt;/Gwb_Magecrmsync&gt;
  &lt;/modules&gt;
  &lt;frontend&gt;
  &lt;routers&gt;
      &lt;magecrmsync&gt;
          &lt;use&gt;standard&lt;/use&gt;
          &lt;args&gt;
              &lt;module&gt;Gwb_Magecrmsync&lt;/module&gt;
              &lt;frontName&gt;magecrmsync&lt;/frontName&gt;
          &lt;/args&gt;
      &lt;/magecrmsync&gt;
  &lt;/routers&gt;
  &lt;layout&gt;
      &lt;updates&gt;
          &lt;magecrmsync&gt;
              &lt;file&gt;adminhtml.xml&lt;/file&gt;
          &lt;/magecrmsync&gt;
      &lt;/updates&gt;
  &lt;/layout&gt;
  &lt;/frontend&gt;
  &lt;admin&gt;
  &lt;routers&gt;
      &lt;magecrmsync&gt;
          &lt;use&gt;admin&lt;/use&gt;
          &lt;args&gt;
              &lt;module&gt;Gwb_Magecrmsync&lt;/module&gt;
              &lt;frontName&gt;magecrmsync&lt;/frontName&gt;
          &lt;/args&gt;
      &lt;/magecrmsync&gt;
  &lt;/routers&gt;
  &lt;/admin&gt;
  &lt;adminhtml&gt;
  &lt;menu&gt;
      &lt;menu1 translate="title" module="magecrmsync"&gt;
          &lt;title&gt;Synchronize&lt;/title&gt;
          &lt;sort_order&gt;999&lt;/sort_order&gt;
          &lt;children&gt;
              &lt;menuitem1 module="magecrmsync"&gt;
                  &lt;title&gt;Customers&lt;/title&gt;
                  &lt;action&gt;magecrmsync/adminhtml_customers&lt;/action&gt;
              &lt;/menuitem1&gt;
              &lt;menuitem2 module="magecrmsync"&gt;
                  &lt;title&gt;Orders&lt;/title&gt;
                  &lt;action&gt;magecrmsync/adminhtml_orders&lt;/action&gt;
              &lt;/menuitem2&gt;
              &lt;menuitem3 module="magecrmsync"&gt;
                  &lt;title&gt;Products&lt;/title&gt;
                  &lt;action&gt;magecrmsync/adminhtml_products&lt;/action&gt;
              &lt;/menuitem3&gt;
          &lt;/children&gt;
      &lt;/menu1&gt;
  &lt;/menu&gt;
  &lt;acl&gt;
      &lt;resources&gt;
          &lt;admin&gt;
              &lt;children&gt;
                  &lt;menu1 translate="title" module="magecrmsync"&gt;
                      &lt;title&gt;Synchronize&lt;/title&gt;
                      &lt;sort_order&gt;999&lt;/sort_order&gt;
                      &lt;children&gt;
                          &lt;menuitem1&gt;
                              &lt;title&gt;Customers&lt;/title&gt;
                          &lt;/menuitem1&gt;
                          &lt;menuitem2&gt;
                              &lt;title&gt;Orders&lt;/title&gt;
                          &lt;/menuitem2&gt;
                          &lt;menuitem3&gt;
                              &lt;title&gt;Products&lt;/title&gt;
                          &lt;/menuitem3&gt;
                      &lt;/children&gt;
                  &lt;/menu1&gt;
              &lt;/children&gt;
          &lt;/admin&gt;
      &lt;/resources&gt;
  &lt;/acl&gt;
  &lt;/adminhtml&gt;
  &lt;global&gt;
  &lt;!-- turn on models --&gt;
  &lt;models&gt;
      &lt;magecrmsync&gt;
          &lt;class&gt;Gwb_Magecrmsync_Model&lt;/class&gt;
          &lt;resourceModel&gt;Magecrmsync_mysql4&lt;/resourceModel&gt;
      &lt;/magecrmsync&gt;
      &lt;magecrmsync_mysql4&gt;
          &lt;class&gt;Gwb_Magecrmsync_Model_Mysql4&lt;/class&gt;
          &lt;entities&gt;
              &lt;magecrmsync&gt;
                  &lt;table&gt;magecrmsync&lt;/table&gt;
              &lt;/magecrmsync&gt;
          &lt;/entities&gt;
      &lt;/magecrmsync_mysql4&gt;
  &lt;/models&gt;
  &lt;!-- turn on models --&gt;
  
  &lt;!-- turn on database connections --&gt;
  &lt;resources&gt;
  &lt;!-- setup is needed for automatic installation --&gt;
      &lt;magecrmsync_setup&gt;
          &lt;setup&gt;
              &lt;module&gt;Gwb_Magecrmsync&lt;/module&gt;
          &lt;/setup&gt;
          &lt;connection&gt;
              &lt;use&gt;core_setup&lt;/use&gt;
          &lt;/connection&gt;
      &lt;/magecrmsync_setup&gt;
      &lt;magecrmsync_write&gt;
          &lt;connection&gt;
              &lt;use&gt;core_write&lt;/use&gt;
          &lt;/connection&gt;
      &lt;/magecrmsync_write&gt;
      &lt;magecrmsync_read&gt;
          &lt;connection&gt;
              &lt;use&gt;core_read&lt;/use&gt;
          &lt;/connection&gt;
      &lt;/magecrmsync_read&gt;
  &lt;/resources&gt;
  
  &lt;blocks&gt;
      &lt;magecrmsync&gt;
          &lt;class&gt;Gwb_Magecrmsync_Block&lt;/class&gt;
      &lt;/magecrmsync&gt;
  &lt;/blocks&gt;
  
  &lt;helpers&gt;
      &lt;magecrmsync&gt;
          &lt;class&gt;Gwb_Magecrmsync_Helper&lt;/class&gt;
      &lt;/magecrmsync&gt;
  &lt;/helpers&gt;
  
  &lt;layout&gt;
      &lt;magecrmsync&gt;
          &lt;file&gt;adminhtml.xml&lt;/file&gt;
      &lt;/magecrmsync&gt;
  &lt;/layout&gt;
  
  &lt;/global&gt;
  &lt;/config&gt;
  </code></pre>
  
  <p>Here's my <code>mysql4-install-0.1.0.php</code> file which is under <code>Gwb/Magecrmsync/sql/magecrmsync_setup</code></p>
  
  <pre><code>&lt;?php
  $installer = $this;
  $installer-&gt;startSetup();
  $installer-&gt;run("
  -- DROP TABLE IF EXISTS {$this-&gt;getTable('magecrmsync')};
  CREATE TABLE {$this-&gt;getTable('magecrmsync')} (
  `user_id` INT NOT NULL AUTO_INCREMENT, 
  `username` VARCHAR(255) NOT NULL, 
  `password` VARCHAR(255) NOT NULL),
  PRIMARY KEY  (`user_id`) 
  ENGINE = MyISAM DEFAULT CHARSET=utf8;
  ");
  $installer-&gt;endSetup();
  </code></pre>
  
  <p>Can anyone tell me that what am i doing wrong here which is not letting my install script to execute?</p>
  
  <p>Any help would be appreciated and will be helpful to me.</p>