SAS VA error with geography fields

[snoopy369]

I have a SAS VA 7.5 installation (Windows) and have run into an odd issue.

When a user selects to create a new geography field, two things happen:

1. They get the red generic error message, which leads to a log entry that suggests there was a CrossDomainProxy error
2. They are only able to make a geography from longitude and latitude, nothing else (not from zipcode or county or etc.)

The odd thing is that the map itself loads fine with lat/long geographies!  I've seen the CrossDomainProxy error before (and searching online, many others have) when the OSM maps can't be loaded properly, but we don't have that issue; there's no proxy it needs to use, just a firewall.  

I'm guessing there is some issue with the program failing to get to an online dataset that it uses to look up coordinates, but I don't see where I can adjust this setting.  In a prior install of SAS Visual Analytics 7.4 on another machine, we had no issue with this.  I had assumed it was using SASHELP.ZIPCODE to look up zipcode centroids, not something online... so I'm further confused.

Does this suggest a firewall issue, and if so, how can I identify the issue and what port/etc. to open?  Or is there a configuration setting wrong somewhere - like, does VA not know where SASHELP.ZIPCODE is and is trying to look somewhere that's causing this error (or maybe it's just an unrelated error...)?

Thanks!