Tooltips and Flash charts

Hi Folks

I wonder if anyone could confirm this for me?  I'm using PP8.0 and I was trying to create a chart with a rich tooltip (a picture of the compound attached to each point and its MW). I had followed the example but my tooltip wasn't showing up - It just displayed the index string - and I was about to post to board because I couldn't work out what was going on!  In the meantime I wanted a picture of the chart for a report, so I changed the type to image (the default in PP8.0 is Flash) and when I went to save the image, up popped my tooltip in all it's glory! 

Has anyone else noticed this or is it peculiar to my system?

Thanks for your help

Hassan