easiest form generator

Formoid is a free desktop app that helps you easily create signup forms, surveys, order forms, event registrations and more in a few seconds without writing a single line of code. Create beautiful online forms in just a few clicks.

The forms I have made test perfectly on your preview

This looks like a great application and could be a real timesaver.
I have had one important problem:
The forms I have made test perfectly on your preview and test host – but when I upload to my own host I get a 405 error after clicking submit :
Method Not Allowed
The requested method POST is not allowed for the URL /forms/hccontact1.html.
I’ve never had this happen before; all my other existing forms on this web host are successfully submitted using POST.
When I test on the server on my local machine the required field and validation systems work fine but I can’t test the mailing as I have no mail sender. When I click submit the form clears but there is no error message.
Another strange thing is if I try to save the project .formoid file after testing on your preview/test host I get another error in an alert box :
Error write simple registration form in html file
I can live with this one, but the first problem with the form not submitting renders the whole thing unusable.
For your information, I am using the following setup:
Locally -
Windows XP SP3
Firefox (with Chrome, IE8, Safari and Opera for testing)
Linux/Apache server
PHP 5.2.10