I received a drawing from a client, that only needed to be plotted.  The Layouts were set up just fine, but the plot came out in color, and we needed all black (a user sent it to the plotter before I was called in on this).  I wanted to set it up to plot with my color table (we plot by color with CTB files).  In the layout setups of this drawing, it was set to plot with STB files (that we don't have).  No matter what I did, I could not change it to plot with CTB's, or to even see them.  I ended up creating a new drawing, setting up New layouts, and copy & pasting everything from the client's drawing into the new drawing.  This created a drawing identical to the client's, but with My plotting setup, and I got the darn thing plotted and out the door.   So.....for next time I run into this..........How do you change a drawing that is set up for STB plotting to work with CTB Color Tables?????   BTW - While I had the client's drawing open, I checked my Options dialog box and under the Plotting tab, and it was set to "Use Color Dependent Plot Styles" (CTB), not "Use Named Plot Styles" (STB).