Setting up Airborne Express

[djmac]

I installed the Airborne Airborne_shipit_API_v1.1 MOD Contribution and when I try to turn on status to edit, I get the following error:

 

Fatal error: Call to undefined function: tep_get_tax_class_title() in /home/eliteimp/public_html/shop/admin/modules.php on line 214

 

The line on 214 states: $keys .= $use_function($value['value']);

 

 

I tried to email the author and I get no response.

 

 

Any ideas

 

Thanks

djmac