I just got a new Leica robotic total station and GPS rover. We shot some practice points and now I'm trying to import the data. I exported what we collected from the data collector in both dxf and txt format. The text file is PNEZ space delimited. When I try to import the points, Civil 3D tells me it can't find a match for the format. I am able to choose the correct format, and have it show up correctly in the preview window, but the OK button remains grayed out.