Custom Payment Method form block - can't display on checkout page - Call to a member function setMethod() Error

Question

I get fatal error while setting up custom payment method block for checkout page

`Fatal error: Call to a member function setMethod() on a non-object in 
app/code/core/Mage/Payment/Helper/Data.php on line 106` 

Here's my Implementation

Payment Method File paths

app/code/local/SecurePay/SecureFrame/Block/Form
app/code/local/SecurePay/SecureFrame/controllers
app/code/local/SecurePay/SecureFrame/Model/Standard.php

Block Class

<?php
     // app/code/local/SecurePay/SecureFrame/Block/Form/SecureFrame.php
class SecurePay_SecureFrame_Block_Form_SecureFrame extends Mage_Payment_Block_Form
{
 protected function _construct()
  {
    parent::_construct();
    $this->setTemplate('secureframe/form/secureframe.phtml');
  }
}

Payment Model

<?php
class SecurePay_SecureFrame_Model_Standard extends Mage_Payment_Model_Method_Abstract {
    protected $_code = 'secureframe'; 
    protected $_formBlockType = 'secureframe/form_secureframe'; //This line thows the error
// other stuff ....
}

Also If I comment the line protected $_code = 'secureframe'; Error disappears but obviously custom payment block does not get set

Edit:
Config.xml File

    <?xml version="1.0"?>
<config>
  <modules>
    <SecurePay_SecureFrame>
      <version>0.1.0</version>
    </SecurePay_SecureFrame>
  </modules>
  <global>
    <models>
      <secureframe>
        <class>SecurePay_SecureFrame_Model</class>
      </secureframe>
    </models>
    <helpers>
      <secureframe>
        <class>SecurePay_SecureFrame_Helper</class>
      </secureframe>
    </helpers>
    <blocks>
      <secureframe>
        <class>SecurePay_SecureFrame_Block</class>
      </secureframe>
    </blocks>
  </global>
  <default>
    <payment>
      <secureframe>
        <model>secureframe/standard</model>
        <active>0</active>
        <order_status>pending</order_status>
        <title>Payment via Securepay</title>
        <payment_action>sale</payment_action>
        <test_mode>1</test_mode>
        <merchant_id></merchant_id>

        <allowspecific>0</allowspecific>

        <currency_accepted>AUD</currency_accepted>
        <sort_order>1</sort_order>
      </secureframe>
    </payment>
  </default>
  <frontend>
    <routers>
      <secureframe>
        <use>standard</use>
        <args>
          <module>SecurePay_SecureFrame</module>
          <frontName>SECUREPAY</frontName>
        </args>
      </secureframe>
    </routers>
  </frontend>
</config>

Template file path for phtml file in template directory

app/design/frontend/base/default/template/securepay/secureframe/form/secureframe.phtml

What I am doing wrong ?? How to resolve this error and display custom form on checkout page

P.S. Also tried placing the form phtml file outside the securepay directory like

app/design/frontend/base/default/template/secureframe/form/secureframe.phtml

However error does not get resolved

Edit Here is the code from Helper file which is giving error

 public function getMethodFormBlock(Mage_Payment_Model_Method_Abstract $method)
{
    $block = false;
    $blockType = $method->getFormBlockType();
    if ($this->getLayout()) {
        $block = $this->getLayout()->createBlock($blockType); // This might be causing error, not sure (from helper file reported in error)

        $block->setMethod($method);
    }
    return $block;
}

Answer 1

When you use a second upper letter in your files and class, things change a litte:

The Block Type Schema: ModuleName/ClassPath:

ModuleName: lowercase when a single name and use exactly the same string when has more than one uppercase letter on name.

ClassPath: lowercase when there is a single name or use first letter on lowercase and in all other first letters use uppercase.

So if your block class is: SecurePay_SecureFrame_Block_Form_SecureFrame Change your block type to:

protected $_formBlockType = 'SecureFrame/form_secureFrame';

Answer 2

Please change code from

<?php
     // app/code/local/SecurePay/SecureFrame/Block/Form/SecureFrame.php
class SecurePay_SecureFrame_Block_Form_SecureFrame extends Mage_Payment_Block_Form
{
 protected function _construct()
  {
    parent::_construct();
    $this->setTemplate('secureframe/form/secureframe.phtml');
  }
}

TO

<?php
     // app/code/local/SecurePay/SecureFrame/Block/Form/SecureFrame.php
class SecurePay_SecureFrame_Block_Form_Secureframe extends Mage_Payment_Block_Form
{
    protected function _construct()
    {
        parent::_construct();
        $this->setTemplate('secureframe/form/secureframe.phtml');
    }
}