I have received some shapefiles which I believe are from ArcGIS. Each "file" consists of a number of physical files, e.g.
kv_27.dbf kv_27.shp kv_27.shp.xml kv_27.shx
I need to extract the coordinates from these files. I am trying to use QGIS and the instructions here:
I am opening the files using Add layer >> Add vector layer
My first question is which file or files should I open?
When I try to carry out the command
Vector >> Geometry tools >> Add/Export Geometry Columns
Once I click OK I get the error message:
Currently QGIS doesn't allow simultaneous access from different threads to the same datasource. Make sure your layer's attribute tables are closed. Continue?
Neither option (yes/no) provides the coordinates.
Could someone explain what it is I am doing wrong?