Warning message and not functioning Popup list style

Hello,
Thank you for your work!
Howewer I couldn't get Popup List style to work.
First I see is the warning message:

warning: Invalid argument supplied for foreach() in Z:\home\d1\www\sites\all\modules\views_popup\views_popup_plugin_style_views_popup_list.inc on line 32.

The second is that I see nothing in sections Field and Show In.
When I save the view and go to corresponding page, I get another warning for every item on the page where I use this view:

warning: Invalid argument supplied for foreach() in Z:\home\d1\www\sites\all\modules\views_popup\views_popup_theme_list.inc on line 37.

I'm using exposed filters in the view, drupal 6.6

Best regards,
Serhiy