Netresearch_PaymentFee
1. Open app/code/community/Netresearch/PaymentFee/etc/config.xml
and find the following code:
<controller_action_predispatch_checkout_onepage_savePayment> <observers> <paymentfee> <type>singleton</type> <class>paymentfee/observer</class> <method>handlePaymentFee</method> </paymentfee> </observers> </controller_action_predispatch_checkout_onepage_savePayment>2. Replace it with:
<controller_action_predispatch_checkout_onepage_savePayment> <observers> <paymentfee> <type>singleton</type> <class>paymentfee/observer</class> <method>handlePaymentFee</method> </paymentfee> </observers> </controller_action_predispatch_checkout_onepage_savePayment> <controller_action_predispatch_firecheckout_index_savePayment> <observers> <paymentfee> <type>singleton</type> <class>paymentfee/observer</class> <method>handlePaymentFee</method> </paymentfee> </observers> </controller_action_predispatch_firecheckout_index_savePayment>3. Save the changes and clear the cache.