pagination issue with HTML Code field type

hi

i'm having trouble with an EFG form that contains 'html code' field types (which i'm using to add fieldsets/legends). the form also contains multiple pages with 'back' buttons.

when the back button is used and then the form is completed and submitted, i am getting a MySQL syntax error because the generated query has a 'blank' field name (it's hard to spot, but it's last field in the INSERT):

Code:

---

INSERT INTO tl_creative_spaces (tstamp, art_type, associations, devote_time, devote_years, artist_details, insuranceSRC, title, ) VALUES (1303796820, 'text field', 'text area - now edited by using back button', '1', '459', 'a:2:{i:0;s:10:\"practicing\";i:1;s:11:\"exhibitions\";}', 'tl_files/uploads/creative-spaces/form__40.pdf', 'another page with a text field', '')

---

if you add print_r($arrSubmitted); exit; after line 539 in the file: system/modules/efg/ExtendedForm.php you can see that the session 'FORM_DATA' array contains a 'blank' element:

Code:

---

Array
(
    [art_type] => text field
    [associations] => text area - now edited by using back button
    [devote_time] => 1
    [devote_years] => 459
    [artist_details] => Array
        (
            [0] => practicing
            [1] => exhibitions
        )

    [] =>
    [title] => another page with a text field
)

---

this blank element seems to be coming from the html code fields (which do not have a 'name'). for some reason they are being stored in the session data despite this widget type having $blnSubmitInput = false;.

as a quick fix hack, i've added unset($_SESSION['FORM_DATA']['']); after line 537, which seems to have solved the problem for now.

i think, maybe, there's a bug in EFG that is storing the 'do not submit' data in the session - possibly line 442:

Code:

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elseif ($objWidget->submitInput() || $strMode == 'back')

---

but i'm not familiar enough with EFG to say for sure.