I am an infopath newbie so please excuse me if this is obvious to you.

I am trying to complete section "Publishing an InfoPath Form" ending in page 367. At the end of publishing my form to the SharePoint form library Registrations, I got the following message:

The form template has been published to the server but it can only be opened in InfoPath Filler.

There is an error in the InternalStartup method of form code.

There may be additional error details in the Design Checker task pane.

So I checked the Design Checker and it shows

1) Data connections contain parameterized queries
2) Code events on Person/Group Picker controls are not supported in sandboxed solutions

I uncommented all the custom codes in VSTA and still get the above messages so I don't think there is anything wrong in InternatStartup. Ideas anyone? Thanks.