Logical hook displaying some information from parent record throws error

I have an instance of SugarCRM 6.5 CE and one of the requirements I have to fulfill is to display some information - contact phone number, contact email address - parent record in a related task / activity record.

Everything I've found so far has pointed to creating a boolean hook to pull contact information from the parent record (Contacts) and display them in the custom fields of the child record (Tasks).

Following some instructions and examples, I came up with the following as described below.

In the section "custom / modules / Tasks" I create a file called "logic_hooks.php"

<?php// $Id$
$hook_version = 1;
$hook_array = Array();

// debug
$GLOBALS['log'] = LoggerManager::getLogger('SugarCRM');
$GLOBALS['log']->debug("Task: logic hook invoked"); 

// position, file, function
$hook_array['after_retrieve'] = Array();
$hook_array['after_retrieve'][] = Array('1', 'contact_info', 'custom/modules/Tasks/hooks/contact_info.php','contact_info_class', 'contact_info_method');
?>

      

        
        
        
      

    

and under "custom / modules / Tasks / hooks" I create a file called "contact_info.phplogic_hooks.php"

<?php
class contact_info_class {
    // retrieve contact information from parent record
    function contact_info_method($bean, $event, $arguments) {
        // debug
        $GLOBALS['log'] = LoggerManager::getLogger('SugarCRM');
        $GLOBALS['log']->debug("Tasks: contact_info_method called for event ".$event . "(BeanID: " . $bean->id . ")");

        // fetch data
        if ($bean->fetched_row['id'] != $bean->id) {
            // load Task
            //$bean = BeanFactory::getBean('Tasks', $id);

            // check if relationship is loaded
            //if ($bean->load_relationship('contact_tasks_parent'))
            if ($bean->load_relationship('contact_tasks')) {
                // fetch related beans 
                //$relatedBeans = $bean->contact_tasks_parent->getBeans();
                $relatedBeans = $bean->contact_tasks->getBeans();

                $parentBean = false;
                if (!empty($relatedBeans)) {
                    // order the results
                    reset($relatedBeans);

                    // first record in the list is the parent
                    $parentBean = current($relatedBeans);

                    // retrieve data from parent bean
                    $bean->contact_phone_c = $parentBean->phone_work
                    $bean->contact_primary_email_c = $parentBean->email1
                }
            }
        }
    } // contact_info_method
} // contact_info_class
?>

      

        
        
        
      

    

With this hook, I can create new tasks without any problem, but when I open an existing one I get a message reading

An error occurred while processing your request. Please try again later.

Being completely new to SugarCRM (around 6.5.20 CE this is my case), I have no idea what is going wrong here.

I also can't seem to find any debug messages that need to be written somewhere.

- Sil68