.Net Create Campaign From Template - Images Error 500


I am trying to create a campaign using an existing template using the latest .net Campaign Monitor API.

When setting the template content, everything works perfectly for singlelines, miltilines, title and all other information.

However no matter what content I set for the images, an exception with remote server error 500 is thrown.

I've tried many random images I found on Google - same error every time.

Here is an example code:

var templateContent = new CM.TemplateContent();

templateContent.Images = new List<CM.EditableField> {
    new CM.EditableField {
        Content = "http://www.google.co.nz/images/srpr/logo11w.png",
        Alt =  "This is alt text for an image",
        Href = "http://example.com/" }

Note: I have tried images with HTTPS and HTTP

Am I doing something wrong?

Thank you

Join 200,000 companies around the world that use Campaign Monitor to run email marketing campaigns that deliver results for their business.

Get started for free