I'm using 2010 Autocad Civil 3D. I'm in the process of converting to .stb. I used CONVERTCTB to make a new .stb pen file. I used CONVERTPSTYLES to change over to .stb in the drawing file. I've been updating with this same process in Autocad 2009, and tested 2009 Civil 3D and 2010 Autocad. I've had no problems with these 3 versions.
In 2010 Autocad Civil 3D, I complete the process, but the PLOT STYLE column in the LAYER PROPERTIES MANAGER box is screened back (as though it's locked) and won't let me complete the change. Please help. Thanks.