Everything seems to be there, configured properly and ready for a POST and the post happens, but what I get back is this->
Server Error in '/profile' Application.
Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.
Details: To enable the details of this specific error message to be viewable on remote machines, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".
<!-- Web.Config Configuration File --> <configuration> <system.web> <customErrors mode="Off"/> </system.web> </configuration>
Notes: The current error page you are seeing can be replaced by a custom error page by modifying the "defaultRedirect" attribute of the application's <customErrors> configuration tag to point to a custom error page URL.
<!-- Web.Config Configuration File --> <configuration> <system.web> <customErrors mode="RemoteOnly" defaultRedirect="mycustompage.htm"/> </system.web> </configuration>
So I assume fiddler show that your page post and the example.html post the same param and URL. With all the id and name the same on your page and all the example.html <div /> on your page.
I doubt they will open up the error to remote client. Try sending an email to firstname.lastname@example.org
with the url, exact date and time(w/ timezone) and see if they can/willing to find the error log on their side.