WCF auto generate proxy causes type conversion exception for de-serialization

Question

I have added a service reference for a java webservice. As per the WSDL description of the webservice, the proxy supposes to create single dimensional array for the collections. But for some reason, it is creating the collections with 2 dimensional arrays. Based on some Google searching I did, I have manually changed the 2 dimensional arrays to single dimensional array. But now, even though there is no de-serialization exception, the number of items in the collection is always one.

InnerException       
 {"Unable to generate a temporary class (result=1).\r\nerror CS0030: Cannot convert type '****classificationPair[]' to '****classificationPair '\r\nerror CS0030: 
Cannot convert type 'MYWSDL.ServiceReference1.MyHistory[]' to 'MYWSDL.ServiceReference1.MyHistory      System.Exception {System.InvalidOperationException}

Answer 1

Some time the issue can be resolved by changing the two dimensional arrays to single dimensional array. But if it did not, then change the single dimensional array in the proxy class to List collection as below manually.

private List<classificationPair> valuesField