I get the following exception when my VB.NET app calls a Java web service that returns an array of objects. The same call works for a single object though. So looks like there is no problem serializing the object but there seems to be a problem serializing an array of objects. Any help will be appreciated

"Cannot assign object of type System.Object[] to an object of type ElectronicWallet.C2PTest.PaymentItem."

[System.InvalidOperationException]: {System.InvalidOperationException
   HelpLink: Nothin
   InnerException: {System.InvalidCastException
   Message: "There is an error in XML document (12, 19).
   Source: "System.Xml

   StackTrace: "   at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle
  at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader
  at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall
  at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters
  at ElectronicWallet.C2PTest.SOAPPaymentServiceService.method1(String par1, String par2, String par3, Int64 par4, String par5, String par6, Boolean par7, String par8, String par9, String par10, String par11) in C:\Projects\Gateway\ElectronicWallet\ElectronicWalletWebService\Web References\C2PTest\Reference.vb:line 4
  at ElectronicWallet.PayoutCommon.DoPayout(Int64 lngTransID, XmlDocument& oWSReq, XmlDocument& oWSResp) in C:\Projects\Gateway\ElectronicWallet\ElectronicWalletWebService\PayoutCommon.vb:line 22
  at ElectronicWallet.Process.EWPayout(String s_Payout) in C:\Projects\Gateway\ElectronicWallet\ElectronicWalletWebService\Process.asmx.vb:line 153
   TargetSite: {System.Reflection.RuntimeMethodInfo
?ex.InnerException
{System.InvalidCastException
   [System.InvalidCastException]: {System.InvalidCastException
   HelpLink: Nothin
   InnerException: Nothin
   Message: "Cannot assign object of type System.Object[] to an object of type ElectronicWallet.C2PTest.PaymentItem[].
   Source: "fqsomxwu
   StackTrace: "   at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read3_ResponsePar6l(
  at System.Xml.Serialization.XmlSerializationReader.ReadReferencingElement(String name, String ns, Boolean elementCanBeType, String& fixupReference
  at System.Xml.Serialization.XmlSerializationReader.ReadReferencedElements(
  at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReader1.Read6_method1Response()
   TargetSite: {System.Reflection.RuntimeMethodInfo

Related code from .NET proxy class............................

'<remarks/
<System.Web.Services.Protocols.SoapRpcMethodAttribute("", RequestNamespace:="http://somewebsite", ResponseNamespace:="https://somewebsite/method1")>  
Public Function method1(ByVal par1 As String, ByVal par2 As String, ByVal par3 As String, ByVal par4 As Long, ByVal par5 As String, ByVal par6 As String, ByVal par7 As Boolean, ByVal par8 As String, ByVal par9 As String, ByVal par10 As String, ByVal par11 As String) As <System.Xml.Serialization.SoapElementAttribute("method1Return")> ResponseMode
       Dim results() As Object = Me.Invoke("method1", New Object() {par1, par2, par3,_u97 ?mount, par5, par6, par7, par8, par9, par10, par11}
         
           Return CType(results(0),ResponseModel
       End Functio

'<remarks/
   <System.Xml.Serialization.SoapTypeAttribute("ResponseModel", "http://somewebsite")>  
   Public Class ResponseMode
     
       '<remarks/
       Public ret1  As Strin
     
       '<remarks/
       Public ret2  As Strin
     
       '<remarks/
       Public ret 3 As Strin
     
       '<remarks/
       Public paymentItems() As PaymentIte
   End Clas
 
   '<remarks/
   <System.Xml.Serialization.SoapTypeAttribute("PaymentItem", "http://somewebsite")>  
   Public Class PaymentIte
     
       '<remarks/
       Public ret4 As Strin
     
       '<remarks/
       Public ret5 As Strin
       
       '<remarks/>
       Public ret6 As String
   End Class

Here is the VB.NET code.............................

Dim SoapRequest As New C2PTest.SOAPPaymentServiceService
Dim C2PResult As New C2PTest.ResponseModel
Dim Dict As New Collections.Specialized.StringDictionary
C2PResult = SoapRequest.method1(Dict("par1"), Dict("par2"), Dict("par3"), Dict("par4"), _
Dict("par5"), Dict("Par6"), Dict("par7"), Dict("par8"), Dict("par9"), _
           Dict("par10"), Dict("par11"))

Here is the WSDL file.............................

<wsdl:definitions targetNamespace="https://somewebsite/method1" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:apachesoap="http://xml.apache.org/xml-soap" xmlns:impl="https://somewebsite/method1" xmlns:intf="https://somewebsite/method1" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tns1="http://somewebsite" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <wsdl:types>
        <schema targetNamespace="http://somewebsite" xmlns="http://www.w3.org/2001/XMLSchema">
            <import namespace="http://schemas.xmlsoap.org/soap/encoding/"/>
            <complexType name="PaymentItem">
                <sequence>
                    <element name="ret4" nillable="true" type="xsd:string"/>
                    <element name="ret5" nillable="true" type="xsd:string"/>
                    <element name="ret6" nillable="true" type="xsd:string"/>
                </sequence>
            </complexType>
            <complexType name="ResponseModel">
                <sequence>
                    <element name="ret1" nillable="true" type="xsd:string"/>
                    <element name="ret2" nillable="true" type="xsd:string"/>
                    <element name="ret3" nillable="true" type="xsd:string"/>
                    <element name="paymentItems" nillable="true" type="impl:ArrayOf_tns1_PaymentItem"/>
                </sequence>
            </complexType>
        </schema>
        <schema targetNamespace="https://somewebsite/method1" xmlns="http://www.w3.org/2001/XMLSchema">
            <import namespace="http://schemas.xmlsoap.org/soap/encoding/"/>
            <complexType name="ArrayOf_tns1_PaymentItem">
                <complexContent>
                    <restriction base="soapenc:Array">
                        <attribute ref="soapenc:arrayType" wsdl:arrayType="tns1:PaymentItem[]"/>
                    </restriction>
                </complexContent>
            </complexType>
        </schema>
    </wsdl:types>
    <wsdl:message name="method1Request">
        <wsdl:part name="par1" type="xsd:string"/>
        <wsdl:part name="par2" type="xsd:string"/>
        <wsdl:part name="par3" type="xsd:string"/>
        <wsdl:part name="par4" type="xsd:long"/>
        <wsdl:part name="par5" type="xsd:string"/>
        <wsdl:part name="par6" type="xsd:string"/>
        <wsdl:part name="par7" type="xsd:boolean"/>
        <wsdl:part name="par8" type="xsd:string"/>
        <wsdl:part name="par9" type="xsd:string"/>
        <wsdl:part name="par10" type="xsd:string"/>
        <wsdl:part name="par11" type="xsd:string"/>
    </wsdl:message>
    <wsdl:message name="method1Response">
        <wsdl:part name="method1Return" type="tns1:ResponseModel"/>
    </wsdl:message>
    <wsdl:portType name="SOAPPaymentService">
        <wsdl:operation name="method1" parameterOrder="par1 par2 par3 par4 par5 par6 par7 par8 par9 par10 par11">
            <wsdl:input message="impl:method1Request" name="method1Request"/>
            <wsdl:output message="impl:method1Response" name="method1Response"/>
        </wsdl:operation>
    </wsdl:portType>
    <wsdl:binding name="method1SoapBinding" type="impl:SOAPPaymentService">
        <wsdlsoap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
        <wsdl:operation name="method1">
            <wsdlsoap:operation soapAction=""/>
            <wsdl:input name="method1Request">
                <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="http://somewebsite" use="encoded"/>
            </wsdl:input>
            <wsdl:output name="method1Response">
                <wsdlsoap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" namespace="https://somewebsite/method1" use="encoded"/>
            </wsdl:output>
        </wsdl:operation>
    </wsdl:binding>
    <wsdl:service name="SOAPPaymentServiceService">
        <wsdl:port binding="impl:method1SoapBinding" name="method1">
            <wsdlsoap:address location="https://somewebsite/method1"/>
        </wsdl:port>
    </wsdl:service>
</wsdl:definitions