Symbology disappeared on TOC/Legend widget on Flex 3.3 portal after https upgrade

Hello,

We were successfully using Robert Scheitlin's TOC/Legend widget, but then we upgraded our security from http to https and somehow lost all of our symbology in our portals. We're using ArcGIS Server 10.1 and flex 3.3. Robert, can you please help?

Thanks,
Najya