PHP - Cannot get SOAP server to work - php

Question

I have written a very simple SOAP Server to check access to the server but I'm getting an error.
The server is a brand new VM of Windows Server 2008R2 (which I installed today to check this) I then installed WAMP which is working correctly. I think the issue is more of a configuration one but I'm no expert from here so need some help finding it.
I have enabled SOAP in WAMP. The WSDL is fine, I have checked it on a hosted server and it works as expected along with the server and client php files.
The error received at the client:
Fatal error: Uncaught SoapFault exception: [WSDL] SOAP-ERROR: Parsing WSDL:
Couldn't load from './Soaptest.wsdl' : failed to load external entity "./Soaptest.wsdl" in
C:\wamp\www\Connector\Testing\c20\c20simpleClient.php:7
Stack trace: #0 C:\wamp\www\Connector\Testing\c20\c20simpleClient.php(7):
SoapClient->SoapClient('./c20simpleSoap...') #1 {main} thrown in
C:\wamp\www\Connector\Testing\c20\c20simpleClient.php on line 7
The Soap Server:
function Test(){
return true;
}
$server = new SoapServer("Soaptest.wsdl");
$server->addFunction("Test");
$server->handle();
The client (Line 6+):
$url = "./Soaptest.wsdl";
$client = new SoapClient($url);
echo "client created<br>";
$result = $client->Test();
echo "<hr>Method Test: <pre>".(string)$result."</pre>";
Aside from enabling soap in the php config, is there anything I need to do in Apache or php to enable SOAP?