NuSOAP - passing PHP arrays to a web service

Hi there. I'm trying to use NuSOAP to invoke a function offered by a coldfusion web service. I am able to find and interpret the WSDL file and use it to make function calls that involve passing simple types and receiving complex return types. However, I can't make a call on a function that requires an array parameter passed. It always fails with the error: Error: soapenv:Server.generalException: [org.apache.axis.AxisFault : ; nested exception is: org.xml.sax.SAXException: No deserializer for {http://www.w3.org/2001/XMLSchema}anyType]; nested exception is: coldfusion.xml.rpc.CFCInvocationException: [org.apache.axis.AxisFault : ; nested exception is: org.xml.sax.SAXException: No deserializer for {http://www.w3.org/2001/XMLSchema}anyType] Any help would be greatly appreciated. Alex