Ceon Advanced Shipper base date?

[boxcar]

I am using Ceon Advanced Shipper with ZC 1.5.0. I, too, know this is a paid add-on but I am hoping to find a kindred spirit that can lend a hand since Ceon has passed on and JSweb is NOT supporting this module at all.

I am trying to set up the Custom Product Field Configuration/Integration . I followed the instructions in the docomentation and it all seemed to go swimmingly until I tried to actually assign a custom field to a method on the Advanced Shipper Config page; I can choose the custom vield value from dropdown menu - that part works ok. But I cannot save it.

My log files show:

PHP Fatal error: Cannot use string offset as an array in /path/to/file/advshipper_method_config.php on line 981

And this is what I learned:

An offset error in PHP is a fatal error that occurs when you incorrectly try to use an index value for an array on a string variable.

So I sort of understand what the problem is - - the array of option Values and Titles set in admin/includes/languages/english/advshipper_custom_product_field_functionality are strings but the function is looking for an index value.

But don't know how to fix it

Here is the code in question (line 981)

    // Store any custom product field value selections /////////////////////////////////////////////
    if (isset($_POST['custom_product_field_values'])) {
        $custom_product_field_values_info = $_POST['custom_product_field_values'];
        
        if (strlen($custom_product_field_values_info) > 0) {
            $custom_product_field_values_info_array = explode('||',
                $custom_product_field_values_info);
            
            $num_custom_product_field_values = sizeof($custom_product_field_values_info_array);
            
            for ($custom_product_field_value_i = 0; $custom_product_field_value_i <
                    $num_custom_product_field_values; $custom_product_field_value_i++) {
                $custom_product_field_value_info = explode('|',
                    $custom_product_field_values_info_array[$custom_product_field_value_i]);
                
                $custom_product_field_values[$custom_product_field_value_i]['value'] =
                    $custom_product_field_value_info[0];
                $custom_product_field_values[$custom_product_field_value_i]['title'] =
                    urldecode($custom_product_field_value_info[1]);
            }
        }
    } 

If anyone has used the Custom Product Field feature successfully or has any suggestions on how to fix this, I could sure use some help.