How to handle a HttpResponse with a REST call using HTTPS

I am having trouble handling a HttpResponse while doing an REST call with HTTPS. I keep getting the error: 

Invalid handle.  Not initialized or points to a deleted object. (3135)

I have tried the same REST call with HTTP and everything works fine just not with HTTPS.

The request does get to our server and it does write a record to our database but Progress doesn't seem to be able to handle the response correctly for a secure call.

Any help with this would be much appreciated.

DEF VAR httJsonExample AS HANDLE NO-UNDO.
DEF VAR lRetOK AS LOGICAL NO-UNDO.

def var httpUrl as char no-undo. 

DEFINE VAR oJson AS JsonObject NO-UNDO.
DEFINE VAR oRequest AS IHttpRequest NO-UNDO.
DEFINE VAR oResponse AS IHttpResponse NO-UNDO.
DEF VAR oCredentials AS Credentials NO-UNDO.

assign httpUrl = "https://randomsite.com/stuff".

httJsonExample = DATASET randomDataset:HANDLE NO-ERROR.
oJson = new JsonObject().
ASSIGN lRetOK = oJson:Read(httJsonExample,true,true) NO-ERROR. 
CAST(oJson, JsonObject):WriteFile('randomFile.json.' + STRING(DAY(TODAY)), true).
oCredentials = new Credentials('application','USERNAME','PASSWORD').

oRequest = RequestBuilder:POST(httpUrl, oJson)
   :AddHeader("Location", "Somewhere")
   :AcceptJson() 
   :UsingBasicAuthentication(oCredentials)
   :Request. 

/* this is where it fails.
oResponse = ClientBuilder:Build():Client:Execute(oRequest).