Does anybody use the GavickPro News Highlighter GK1 plugin?

If so, have you managed to configure it to display news from multiple sections and categories?

I've entered comma separated section/category IDs into the parameters, but the ticker displays nothing. The only way I can get anything to work is to select ONE section and/or category from the drop down boxes, but I really need it to show headlines from my Junior School AND Senior School sections.

After 10 months of hard work, it's one of the few things that's stopping me from pressing the big button that'll make my site go live. So frustrating...