Form Library, submit/Save??

illegal_operation — Fri, 04 Dec 2015 05:39:13 GMT

I've been using InfoPath forever, but it's been awhile since I created a all new form from scratch.

InfoPath: 2010

SharePoint: 365

I created a new form library, in the form on the ribbon if I click 'save' it will save the form to the library.
This is just the default blank form.

I'm not going to want users to use the controls in the ribbon, I'm going to want custom buttons that have some validation etc.

From memory, I thought you created a data connection and submit to the library? Is that correct, because it's not working. No matter what I do I just get some generic error.

We just recently moved to SP 365, does that have something to do with it?
Do I need to upgrade Infopath to 2013?

Any help/ideas would be great.

Data Connections

Form Library, submit/Save??