If you have turned off the "Autogenerate Layout" feature, make sure all of the placeholders are added to the layout. A form will not submit and will not throw off all error messages if there are missing placeholders. You can enable the "Autogenerate Layout" feature so that placeholders are automatically added. RSForm! Pro has some Form Layouts (Inline, Inline XHTML, 2 Lines, 2 Columns Inline, 2 Columns 2 Lines) that you can choose from.

How do I add placeholders ?

Click on the Form Layout tab. You must disable "Autogenerate Layout" (it's a small checkbox above the form's HTML layout). This will allow you to edit the HTML layout. Then, just type the placeholders in the HTML layout, in the appropiate place where you want them to show up.

Placeholders are related to a field's name. So, if you added a dropdown field called "Age", you will have the following placeholders available:

{Age:caption} - This will show the caption of the field with the name Age.

{Age:body} - This will show the body of the field (ours being a dropdown, it will show the dropdown itself)

{Age:validation} - This will show the validation message of the field (if triggered). So this message will appear only when the validation fails, otherwise it will show up as being blank.

{Age:description} - This will show the description of the field.

It's a good practice to include all placeholders. The mandatory placeholders are the body and the validation, since they show up the field and the message if the validation fails.