Thanks Gus.
The form you created in the past was most likely a SharePoint List form. That's the form with a locked schema, which maps its data directly into the list. That is, the user goes to the list, clicks Add item, fills out the form, and the data entered creates a new list item.
qRules is not meant to be used in SharePoint List forms. (Actually, no code can be used in these forms.)
What you've most likely created now is not a SharePoint List form, but a regular, blank, InfoPath form template. This type of form template can be admin deployed or can be published directly to a form library (on ShP 2010), but cannot be published to a SharePoint list.
You could do the following:
1. Admin deploy the form.
2. Provide the link to the form to the users.
3. Users access that URL to access the form and fill it out.
4. The form uses SubmitToSharePointList to map data to the SharePoint List.
Hope this helps. In addition, Hilary has a fantastic set of blog posts walking thru the possible scenarios, available here:
http://www.infopathdev.com/blogs/hilary/archive/2012/07/05/qrules-refreshsharepointlistitems-walkthrough-for-v4-2.aspx
The free qRules training is also available, here:
http://www.infopathdev.com/files/folders/qrulestraining/entry78317.aspx
Good luck!