Created Unassigned: Adding to a Web Part Zone [1462]

Great App. Works like a charm.
However, when I try to add 3 web parts to show weather in 3 locations to the same web part zone, the top web part is okay but any web parts unde rdisplay in a different zone.

If the weather web part is the lowest in the zone everything is okay.
If the weather web part in the top web part in the zone, nothing appears below.
Strange to say the least.

When I open a page in SharePoint Designer with this web part included, I get an Error Rendering Control in place of the web part.


This is SharePoint 2010 Enterprise.
Any suggestions?