form_dropdown -> optgroup validation issue

[eluser]xpix[/eluser]
It's the first error

Code:

#  Error  Line 89, Column 11: end tag for "optgroup" which is not finished

</optgroup>

✉

Most likely, you nested tags and closed them in the wrong order. For example <p><em>...</p> is not acceptable, as <em> must be closed before <p>. Acceptable nesting is: <p><em>...</em></p>

Another possibility is that you used an element which requires a child element that you did not include. Hence the parent element is "not finished", not complete. For instance, in HTML the &lt;head&gt; element must contain a &lt;title&gt; child element, lists (ul, ol, dl) require list items (li, or dt, dd), and so on.

I also use the formdropdown as multi select but I do not get this problem. Weird.