Gray Dot on Map that won't Go Away

[JustinDallas]

Hello Folks,

I have a map that works great, but I've got this gray dot that I can't seem to make go away.  Generally, grayness is brought about by something not matching up to a dimension.  But that doesn't seem to be the case. 

At first view, I have this here where the gray dot sits over Orlando.

When I click the dot, I see that it zooms in, but it isn't tied to a dimension as we can see in the legend on the right

However, when I look at my table, I see that the zipcodes are there, as well as a BillToId.

I've fiddled with any setting on the map that I could find, yet the gray dot perseveres.  Any help on ending the gray menace is greatly appreciated.

[nicu1996]

Uncheck "include null values".

Please provide a sample app.