Please note that this documentation is for the most recent version of this extension. It may not be relevant for older versions. Related documentation can be found in the documentation directory of the extension.
Sending the form ends in a 404 error
The AJAX request of form results a:
Page Not Found Reason: Request parameters could not be validated (&cHash empty)
Solution: Open the Installtool and disable pageNotFoundOnCHashError setting:
[FE][pageNotFoundOnCHashError] = false