Since there isn't an Easy Google Analytics (2.1.5) thread, I'm starting one here.

I'm on ZenCart v1.5.1. I was previously using Simple Google Analytics (1.2.6).

In includes/templates/<your template>/common/html_header.php, there's this line:
PHP Code:
/**
 * include content from all site-wide jscript_*.php files from includes/templates/YOURTEMPLATE/jscript, alphabetically.
 * These .PHP files can be manipulated by PHP when they're called, and are copied in-full to the browser page
 */
    
require($template->get_template_dir('.php',DIR_WS_TEMPLATE$current_page_base,'jscript') . '/' $value); echo "\n";
  } 
This seems to included the includes/templates/<your template>/jscript/jscript_google_analytics.php which will include google_analytics.php already.

So the additional line in tpl_main_page.php is redundant...
PHP Code:
<?php 
if (GOOGLE_ANALYTICS_TRACKING_TYPE != "Asynchronous") {
    require(
DIR_WS_TEMPLATE 'google_analytics/google_analytics.php');
}
?>
My question is, should one of it be removed?