Fixing common errors when adding or posting to blogs

Not Posting After 1 – 2 Successful Attempts

  • You can upload a few posts, but after a certain number they all start to fail and get rejected by the server.


  • Most likely your server is rate limiting the submission, contact your hosting company to fix this.
  • You can increase time waiting between post submissions under the advanced settings window.


Loading Errors

  • System.Xml.XmlException: Root element is missing.
  • Error loading Blogs in the application


  1. You can reset the contents of theĀ  blog folder by going to one of the following locations
    • %appdata%\SEO Content Machine
    • My Documents\SEO Content Machine
  2. delete everything in the Content folder

Security Errors

  • xmlrpc.php 404 or Forbidden Error


Adding Errors

  • Response from server does not contain valid XML, when trying to add new Blog


  • Navigate to
  • There should response “XML-RPC server accepts POST requests only.”
  • Sample errors can include:

    Warning: Cannot modify header information – headers already sent by
    Warning: ini_set() has been disabled for security reasons

  • These are blog config errors caused by a corrupt WordPress installation.
  • You may have to disable plugins until the xmlrpc.php output doesn’t show any warnings.

Method Not Allowed

  • Error when adding your blog.


  • Make sure that you use https://
  • To verify, navigate to your site and have a look at the address. Copy this URL to avoid errors.

Posting Errors

  • Error 401. You do not have the right to add a category


  • Change the role from Author to Editor for the login details you entered for the blog.

Internal Server Errors

  • CookComputing.XmlRpc.XmlRpcServerException: Internal Server Error


  • Disable all plugins, then re-enable them one by one. Its most often caused by plugin crash somewhere.

admin has written 31 articles

11 thoughts on “Fixing common errors when adding or posting to blogs

  1. zulian says:

    error connecting

    response content int value where string expected,[response: array maped to type xmlrpccatagpry [] element 0 struc mapped to the xmlrpccategory : member catagory id ……

    1. admin says:

      Does this happen all the time with your blog? Do you have any plugins installed? Please email me, by using contact us screen so that we can get more info about the error from you.

    1. admin says:

      Hi, no the trial and full version is functionally the same. If you have errors its a WP or SCM problem.
      Normally the WP plugin or theme is causing problems.

  2. Response from server does not contain valid XML.
    I tried to follow the instruction, and checked mysite/xmlprc.php as your instruction, then got the message “XML-RPC server accepts POST requests only.”.

    But still got the same issue. What should i do then?

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