Accessing Non-existing Table Column 'location.nid' When Creating a Location View

I tried to create a view to display locations for nodes with certain tag on them. Please note that this tag contains child tags.

Here is the error displayed when saving the view: "'Exception: SQLSTATE[42S22]: Column not found: 1054 Unknown column \'location.nid\' in \'IN/ALL/ANY subquery\''"

I searched module location by checking *.install files and it seemed there was no field 'location.nid'; however, there is a field nid under table "location_instance".

All modules I used are latest versions (or latest dev versions), including:
* Views 7.x-3.0-rc3
* Location 7.x-3.x-dev (2011-Nov-12)
* GMap Module 7.x-1.x-dev (2011-Oct-25)