I'm getting a 500 error when creating a new user in my dev environment. User gets created though and I get a 412 error if I try to run the page a second time. Nothing shows up in my error log. I'm using the php wrapper, pulled from composer. Code is as follows with the PI obfuscated:

 $client = new CheddarGetter_Client(
                'https://cheddargetter.com',
                '***********************',
                '*****************',
                '****************'
            );
            $data = array(
                'code'          => $call_info["first_name"]."_".$call_info["last_name"]."_".$call_info["call_id"],
                'firstName'     => $call_info["first_name"],
                'lastName'      => $call_info["last_name"],
                'email'         => $call_info["email"],
                'subscription'  => array(
                    'planCode'      => $plan_code,
                    'ccNumber'      => str_replace(' ', '', $this->CI->input->post('cardNumber')),
                    'ccExpiration'  => str_replace(' ', '', $this->CI->input->post('cardExpiry')),
                    'ccCardCode'  => $this->CI->input->post('cardCVC'),
                    'ccFirstName'   => $call_info["first_name"],
                    'ccLastName'    => $call_info["last_name"],
                    'ccZip'         => $call_info["zip"]
                )
            );
        try{
            $response = $client->newCustomer($data);
        }catch(CheddarGetter_Response_Exception $re){
            if ($re->getCode() == 412) { // missing fields or field format errors
                echo "\n\tERROR - MISSING OR INVALID FIELDS:\n";
                echo "\n\t(" . $re->getCode() . ':' . $re->getAuxCode() . ') ';
                echo $re->getMessage()."\n";
            } else if ($re->getCode() == 422) { // payment processing errors
                echo "\n\tAN ERROR OCCURED DURING PAYMENT PROCESSING:\n";
                echo "\n\t(" . $re->getCode() . ':' . $re->getAuxCode() . ') ';
                echo $re->getMessage()."\n";
            } else {
                echo "\n\t"."ERROR: (" . $re->getCode() . ':' . $re->getAuxCode() . ') ';
                echo $re->getMessage()."\n";
             }
        } catch (Exception $e) {
            echo "\n\t" . 'ERROR: (' . $e->getCode() . ') ' . $e->getMessage() . "\n";
        }

The values of the data array are as follows. (Once more with PI obfuscated):

array(5) {
  ["code"]=>
  string(13) "Kevin_Huff_64"
  ["firstName"]=>
  string(5) "Kevin"
  ["lastName"]=>
  string(4) "Huff"
  ["email"]=>
  string(23) "******************"
  ["subscription"]=>
  array(7) {
    ["planCode"]=>
    string(19) "***********************"
    ["ccNumber"]=>
    string(16) "4111111111111111"
    ["ccExpiration"]=>
    string(7) "04/2028"
    ["ccCardCode"]=>
    string(3) "123"
    ["ccFirstName"]=>
    string(5) "Kevin"
    ["ccLastName"]=>
    string(4) "Huff"
    ["ccZip"]=>
    string(5) "65802"
  }
}