Access denied for paypal_payment_pps/redirect/*

I installed inline registration module register anonymous user while adding node but if 'pay' buttons clicks it redirect to paypal_payment_pps/redirect but this page is showing Access Denied Error message

[4] => PaymentMethod Object
(
[controller] => PaymentMethodControllerUnavailable Object
(
[controller_data_defaults] => Array
(
)

[currencies] => Array
(
)

[description] =>
[name] => PaymentMethodControllerUnavailable
[payment_configuration_form_elements_callback] =>
[payment_method_configuration_form_elements_callback] =>
[title] => Unavailable
)

[controller_data] => Array
(
)

[enabled] =>
[name] => payment_method_unavailable
[module] =>
[pmid] => 4
[status] => 1
[title_specific] => Unavailable
[title_generic] => Unavailable
[uid] => 0
[rdf_mapping] => Array
(
)

)