I've been trying to narrow this down. I found this tread:
http://forums.autodesk.com/t5/AutoCAD-Civil-3D-General/Geolocation-tab-always-loads-at-start/td-p/49...
and have edited the CUI to change the Contextual Ribbon behavior to 'without focus'. I have turned off the geolocation marker with Geomarkervisibility command.
The problem still exists, if I open a drawing that has been geolocated, it automtically opens on the Geolocation tab. If I switch to another drawing (via the drawing tabs) then when I swich back it goes back to the Geoloction tab even if I was on another tab when I left, again this only happen in drawings that have something geolocated.
I have my workspace set up with the geoloction tab and it doers not cause a problem if there is nothing geolocated in that drawing.
I have edited the workspace so that the tab is removed but when I open one of the geolocatcui
ed drawings the tab appears and the problem persists.
My method to add and remove the tab is CUI, select my workspace in the left panel, click Customise Workspace in the right panel so tnat I can tick the geolocate box on the left, click done on the right and OK - see picture attached. Is that the right method?
Any solutions would be greatfully recieved.