I'm using SPS v2.0. I created a site and two web part pages for the site.
I then created an assembly with two classes. Class ParmOutProvider
implements the IParametersOutProvider interface. Class ParmOutConsumer
implements the IParametersOutConsumer interface. If I add both web parts to
the same web part page I can connect them using FrontPage 2003. If I add the
ParmOutProvider web part on one web part page and the ParmOutConsumer on a
different web part page I cannot connect them. When I use FrontPage to
specify a different site it tells me there aren't any web parts on the page
that allow connections.
In both classes I call RegisterInterface with the
allowCrossPageConnection set to true.