No deserializer is registered for schema type: DTORecord

Question

Created an empty project and selected Web Service Proxy from the New... gallery and gave it the URL of my .NET Web Service; accepted all defaults.
Proxy was built, I added some code to display results and it compiled w/o errors.
Error happens when deserializing results.
JDeveloper seems to be "flakey" when generating this. Sometimes DTO is registered sometimes not. Sometimes I have breakpoints in the client test code.
I'm using 10.1.3.1.0.3984 Studio Edition. Is this the latest release? The previous JDev release where a stub/skeleton was generated seemed to be better. There was better control over the web service generation parameters. What have I missed?
Thanks...
WSDL (schema portion):
<s:schema elementFormDefault="qualified" targetNamespace="http://tempuri.org/">
<s:element name="ReturnObj">
<s:complexType/>
</s:element>
<s:element name="ReturnObjResponse">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="ReturnObjResult" type="tns:DTORecordList"/>
</s:sequence>
</s:complexType>
</s:element>
<s:complexType name="DTORecordList">
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="WSNAME" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="ReturnValue" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="DTORecords" type="tns:ArrayOfAnyType"/>
</s:sequence>
</s:complexType>
<s:complexType name="ArrayOfAnyType">
<s:sequence>
<s:element minOccurs="0" maxOccurs="unbounded" name="anyType" nillable="true"/>
</s:sequence>
</s:complexType>
<s:complexType name="DTORecord">
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="Name" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="Address" type="s:string"/>
<s:element minOccurs="1" maxOccurs="1" name="Quantity" type="s:int"/>
</s:sequence>
</s:complexType>
</s:schema>
TestWSObj_SerializerRegistry.java (JDev generates)
QName type = new QName("http://tempuri.org/", "DTORecord");
CombinedSerializer serializer = new wstester.proxy.runtime.DTORecord__LiteralSerializer(type, DONT_ENCODE_TYPE);
registerSerializer(mapping,wstester.proxy.DTORecord.class, type, serializer);

Answer 1

The version of JDev you are using is the latest version.
If you are having some stability issues with the Wizard-based development model, you may want to look into the ant-based model.
As JDev is trying to keep all the classes generated in memory, so that code insight is fast, it can be tricky to re-enter the wizard, as some class that should be re-generated are still in memory.
If you go the ant way, make sure you run ant in a separate process, for the same reason. If you run ant in the same JVM as JDeveloper, you may run into the same issue, where classes are already found in the current class loader, and are not re-generated.
Next realse of JDev will see many improvements on this front. Until then, here are some pointers in the documentation:
How to Set Up Ant for WebServicesAssembler
Using WebServicesAssembler
Here is the bare project, that you can use as template:
&lt;?xml version="1.0" encoding="ISO-8859-1" ?>
&lt;project name="static" default="genproxy" basedir="." xmlns:o="antlib:oracle">
  &lt;property file="build.properties"/>
  &lt;target name="genproxy" description="Generates the proxy from WSDL">
    &lt;delete dir="gen_src"/>
    &lt;o:genProxy wsdl="./etc/Service.wsdl" output="gen_src"/>
  &lt;/target>
&lt;/project>
Hope it helps,
-Eric
ps. to help with your error, you need to provide the full WSDL and the SOAP payload to get to the bottom of the error.