Woocommerce / WC SagePay Direct Plugin

Hi,

Using:
WP v3.4.2
Theme: Enfinity
Woocommerce Version 1.6.5.2
WooCommerce SagePay Direct Payment Gateway Version 0.1.1

Getting the following error after checking out using CC with SagePay Direct. The order goes through in the backend, the transaction processes in my sagepay account, it’s just after the sale I’m redirected to a page containing the following:

{“result”:”failure”,”messages”:”
\n\t\t\t
Action failed. Please refresh the page and retry.<\/li>\n\t\t\t
Sorry, your session has expired. Return to homepage →<\/a><\/li>\n\t\t\t
First Name<\/strong> is a required field.<\/li>\n\t\t\t
Last Name<\/strong> is a required field.<\/li>\n\t\t\t
Address<\/strong> is a required field.<\/li>\n\t\t\t
Town\/City<\/strong> is a required field.<\/li>\n\t\t\t
Postcode<\/strong> is a required field.<\/li>\n\t\t\t
Country<\/strong> is a required field.<\/li>\n\t\t\t
Email Address<\/strong> is a required field.<\/li>\n\t\t\t
Phone<\/strong> is a required field.<\/li>\n\t<\/ul>”,”refresh”:”false”}

Now I know the Woocommerce SagePay Direct plugin states only compatible with WP v3.3.2 and tested with Woocommerce v1.4.1 so it could just be a conflict bewteen the different versions.

The SagePay Direct plugin seems to offer no support, so what would be my best course of action? I am hoping someone else has seen this problem and has resolved it…