Eway CURL Error - Invalid document end

I have CURL enabled: libcurl/7.14.0 OpenSSL/0.9.8a zlib/1.2.3
I am not sure how to find out which version of eCommerce I am using, but it is for drupal 4.7.0

When I submit my Credit Card Details, I get an error:

XML parsing failed: Invalid document end

When debugging eway.inc line 66 ($xml_request = $xml_build_fn($data);) returns me the following xml:

<ewaygateway>
  <ewayCustomerID>87654321</ewayCustomerID>
  <ewayCustomerFirstName></ewayCustomerFirstName>
  <ewayCustomerLastName></ewayCustomerLastName>
  <ewayCustomerEmail></ewayCustomerEmail>
  <ewayCustomerAddress></ewayCustomerAddress>
  <ewayCustomerPostcode></ewayCustomerPostcode>
  <ewayCustomerInvoiceDescription></ewayCustomerInvoiceDescription>
  <ewayTotalAmount>4995</ewayTotalAmount>
  <ewayCustomerInvoiceRef>38</ewayCustomerInvoiceRef>
  <ewayCardHoldersName></ewayCardHoldersName>
  <ewayCardNumber>4111111111111111</ewayCardNumber>
  <ewayCardExpiryMonth>08</ewayCardExpiryMonth>
  <ewayCardExpiryYear>08</ewayCardExpiryYear>
  <ewayTrxnNumber></ewayTrxnNumber>
  <ewayOption1>0</ewayOption1>
  <ewayOption2>0</ewayOption2>
  <ewayOption3>0</ewayOption3>
</ewaygateway>

Thanks a lot for your help.