If something doesn’t work and you want to find out the cause, the first thing you should do is add &rutpdebug (or &rutpdebug=2 for advanced users) to the URL. This will show you details about what is happening in the background. At the end you will see the URL of the resulting post without actually going there.
Example:
http://www.your-wordpress-site.com/?redirect_to=random&rutpdebugOutput:
