API problem? (.net)

[cmsplushosting]

I have the following code:

 Dim WHMCSClient As New WebClient()
       Dim form As New NameValueCollection()
       form.Add("username", My.Settings.WHMCSUser.ToString())
       form.Add("password", Crypto.RijndaelSimple.Decrypt(My.Settings.WHMCSPass.ToString(), "hahaaha", "adgaga44", "SHA1", 2, "yyaa5525234444", 256))
       form.Add("action", "getsupportstatuses")

       Dim newURL As String = My.Settings.WHMCSBaseURL & "/includes/api.php"

       Dim responseData As Byte() = WHMCSClient.UploadValues(newURL, form)

       Dim pass As String = Crypto.RijndaelSimple.Decrypt(My.Settings.WHMCSPass.ToString(), "hahaaha", "adgaga44", "SHA1", 2, "yyaa5525234444", 256)



       TextBox1.Text = String.Format("Base URL: " & newURL & vbCrLf & "User: " & My.Settings.WHMCSUser.ToString() & vbCrLf & "Pass:" & pass & vbCrLf & "{0}", Encoding.ASCII.GetString(responseData))

 

 

I changed the password displayed here, but what this is passing is a valid user and password, and the base URL; I keep getting the following returned from the web service.

 

Base URL: http://mywhmcontrolpanelsite.com/includes/api.php
User: adminuser
Pass:adminpass123
result=error;message=Authentication Failed;

 

I added the IP I'm accessing from in the General > Security Settings tab, still no luck, however if I remove all the IP's from that list, I then get Access Denied messages.

 

Any help would be appreciated, or anything you can think of. Any particular other settings to look out for?

[Matt]

Are you definately "posting" the variables? A query string GET request won't work for the authentication details.

 

Matt