I upgraded to the new 3.0 version and then rolled back to 2.0.5 as 3.0 did not work for me.

I'm now getting this error:

Warning: Illegal offset type in isset or empty in /home/denverar/public_html/components/com_hotspots/views/hotspots/view.html.php on line 50

 
On line 50 in view.html.php I have the following:

if (!isset($cats[$selectedCat])) {
$appl->enqueueMessage(JText::_('COM_HOTSPOTS_MENU_SELECTED_CAT_DOES_NOT_EXIST'), 'error');
$tpl = 'error';
}

Any ideas? Thanks... --Ken--