I've integrated this plugin into a Woocommerce store but am getting the above error from SagePay when trying to process a transaction (both in 'test' and 'live' modes).
I've set up debugging and get the following back from SagePay when trying to process:
Payment Gateway Request: Array
[CardHolder] => Simon Leedham
[CardNumber] => 0000000000000000
[StartDate] => 1209
[ExpiryDate] => 1219
[CV2] => 123
[CardType] => MC
[VendorTxCode] => timereel-131211151243-13818014
[VPSProtocol] => 2.23
[Vendor] => timereel
[Description] => timereel
[Currency] => GBP
[TxType] => PAYMENT
As you can see above none of the info is being passed over from the 'Amount' onwards, have you had this issue before?
Thanks in advance for any help!