Receive 403 Forbidden error when calling ProjectResource.Create, but project still created

Question

When I use the Debug Console to execute C#/.NET code to create a new project (ProjectResource.Create(...)), I receive a "403 Forbidden" error. However, I still receive a Project response and the API correctly creates a file in my Drive. Because Google does not expose what is happening under their API, I have no idea why I see that message in the Debug Console. No errors propagate to the runtime, and I have a strange feeling this is an erroneous output error message left from production.

Why is this happening, and can I remove / prevent this error?

---

Code:

var cpr = new CreateProjectRequest
{
     Title = name
};
scriptID = projectResource.Create(cpr).Execute().ScriptId;

Error:

The caller does not have permission

Error object:

Google.Apis.Requests.RequestError
The caller does not have permission [403]
Errors [
    Message[The caller does not have permission] Location[ - ] Reason[forbidden] Domain[global]
]

---

An alternative possibility might be an issue with the way I set up my Google Console Cloud, but considering the functionality is still intact, I cannot help but think I did it correctly. Furthermore, my credential authorizations all succeed without error.

I authorize my services in the following way:

 scriptService = new ScriptService(new BaseClientService.Initializer()
    {
         ApiKey = apiKeyUser,
         HttpClientInitializer = credential,
         ApplicationName = applicationName
    });
 projectResource = new ProjectsResource(scriptService);

My API key is set up to function with both the Apps Script API and Drive API. My OAuth Client ID is of type: other (it's the only way for desktop applications).

Any thoughts?

PS In my efforts I tried using the DriveService to do the same thing. I still receive the same error in Debug, and alas it still works just like above.

File body = new File()
{
    MimeType = "google-apps.script",
    Name = name,
};

var test = driveService.Files.Create(body);

test.Fields = "id";
var f = test.Execute();