$the_content filter not working

I have a local site that my plugin is working great on. I moved it to a hosted site and now the plugin does not work. I have a filter hook for $the_content where is add to the content of a page.

I have this in my themes function.php file
add_filter( ‘the_content’, ‘errorcode_post’);

I have this code in another file:
function errorcode_post( $content ) {

global $error;
global $mfg1;

require_once(‘BTSErrorLookupMessages.php’);

$new_content = “”;

remove_filter( ‘the_content’, ‘errorcode_post’ );

if( is_page(‘Error Code Lookup’) && is_singular() && is_main_query() ) {

if (empty($_GET[‘btserror’]) && empty($_GET[‘mfg’])) {
gravity_form(‘error_codes’, false, false, false, ”, false);
//$new_content .= ‘[myshortcode]’;
$new_content .= CUSTOMER_MESSAGE;
//$new_content .= “Error” . $error . “
“;
$new_content .= find_error2( $error, $mfg1 );
//$new_content .= ‘MFG = ‘ . $mfg1 . ‘
‘;
//$new_content .= ‘Error = ‘ . $error;
}
else {
//wp_enqueue_script(‘bts-error-codes’);
$new_content .= find_error2( $_GET[‘btserror’], $_GET[‘mfg’] );
//$new_content .= ‘MFG = ‘ . $_GET[‘mfg’] . ‘
‘;
//$new_content .= ‘Error = ‘ . $_GET[‘btserror’];
}
}
$content .= $new_content;

//echo $new_content;

return $content;

}

The function is being called but the $new_content does nothing and my gravity form is being displayed at the beginning of the page before the head. Not sure why moving it to a hosted site would cause this issue.

Thanks in advance.
ab